Introduction to reproduction in organisms class 12 cbse
•Download as PPTX, PDF•
2 likes•839 views
Reproduction is defined as a biological process where an organism produces offspring similar to itself. This ensures the continuity of life from one generation to the next as no individual organism is immortal. Reproduction is essential to maintain the continuity of species over time as each organism has a finite lifespan, even though lifespans vary widely between species from as little as 15 years in crows to over 140 years in parrots. Unicellular organisms do not experience natural death but instead reproduce through cell division to produce similar daughter cells.
Report
Share
Report
Share
Recommended
reproduction in organism
The document discusses different modes of reproduction in organisms, including asexual and sexual reproduction. Asexual reproduction involves reproduction by a single parent and produces offspring that are genetically identical clones. Common forms of asexual reproduction include binary fission, budding, fragmentation, sporulation, and vegetative reproduction. Sexual reproduction involves two parents and produces offspring with genetic variation. The life cycle of sexually reproducing organisms includes juvenile, reproductive, and senescent phases. Key events in sexual reproduction are pre-fertilization, fertilization, and post-fertilization.
Asexual reproduction, reproduction in organisms, neet biology
Life span refers to the period from birth to natural death of an organism. Reproduction allows organisms to produce offspring similar to themselves. There are two types of reproduction: asexual, which involves a single parent, and sexual, which involves two parents of opposite sex fusing gametes. Asexual reproduction results in offspring that are identical clones of the parent and allows for rapid propagation of organisms.
Class12 reproduction in organisms CBSE
A comprehensive guide for students of cbse class XII. Customized Worksheets are also available on chargeable basis.
Ch 1 reproduction in organism
This ppt includes Chapter 1 Reproduction in organisms (CBSE) class XII. It will be helpful for a quick reference.
*** there are a few mistakes please make the following changes
slide 27 , Earthworm is Bisexual( hermaphrodite).
slide 28 , Pistillate - flowers with pistil.
slide 29 and slide 30 - ignore that .
Reproduction in organisms
Sexual reproduction involves the union of genetic material from two parents - a male gamete and a female gamete - to produce a genetically distinct offspring. There are many different modes of asexual reproduction in organisms, including binary fission in unicellular organisms, budding, fragmentation, spore formation, and vegetative reproduction through various plant structures like roots, stems, leaves, runners, and offsets. Asexual reproduction results in offspring that are genetically identical to the parent, while sexual reproduction produces offspring with a new combination of genes from both parents.
Reproduction in organisms
The life spans of wild animals are typically observed to be shorter than in zoos, due to factors like infant mortality, disease, predators, weather, accidents, and competition for resources in natural conditions. Reproduction serves to replace individuals that die from aging or other causes, introduce variation for adaptability, and ensure the continuation of species. The basic features of reproduction include DNA replication, cell growth and division, and the formation and development of reproductive units that develop into new offspring. Organisms can reproduce either once in their lifetime (semelparous) or in successive cycles (iteroparous). Asexual reproduction occurs via budding, fission, fragmentation or regeneration, while sexual reproduction involves syngamy or the fusion of
Rep 1
Reproduction is essential for all living beings to continue their lineage. It occurs through either asexual or sexual reproduction. Asexual reproduction involves a single parent and no gamete formation, while sexual reproduction involves two parents and gamete formation with meiosis. Reproduction is important at the individual, population, and ecosystem levels as it drives evolution over generations and maintains balances within ecosystems. Common forms of asexual reproduction in simple organisms include binary fission, multiple fission, budding, fragmentation, regeneration, and spore formation.
Reproduction in organisms
Reproduction is essential for species survival as it allows the transmission of genetic material between generations. The life span of organisms can vary greatly from just a few minutes to thousands of years. Reproduction can occur asexually through processes like budding, fragmentation, and fission, or sexually which involves the fusion of male and female gametes. In sexual reproduction, gametes are produced through meiosis and then fuse during fertilization, either internally or externally, forming a diploid zygote. The zygote then undergoes embryogenesis developing into a new organism.
Recommended
reproduction in organism
The document discusses different modes of reproduction in organisms, including asexual and sexual reproduction. Asexual reproduction involves reproduction by a single parent and produces offspring that are genetically identical clones. Common forms of asexual reproduction include binary fission, budding, fragmentation, sporulation, and vegetative reproduction. Sexual reproduction involves two parents and produces offspring with genetic variation. The life cycle of sexually reproducing organisms includes juvenile, reproductive, and senescent phases. Key events in sexual reproduction are pre-fertilization, fertilization, and post-fertilization.
Asexual reproduction, reproduction in organisms, neet biology
Life span refers to the period from birth to natural death of an organism. Reproduction allows organisms to produce offspring similar to themselves. There are two types of reproduction: asexual, which involves a single parent, and sexual, which involves two parents of opposite sex fusing gametes. Asexual reproduction results in offspring that are identical clones of the parent and allows for rapid propagation of organisms.
Class12 reproduction in organisms CBSE
A comprehensive guide for students of cbse class XII. Customized Worksheets are also available on chargeable basis.
Ch 1 reproduction in organism
This ppt includes Chapter 1 Reproduction in organisms (CBSE) class XII. It will be helpful for a quick reference.
*** there are a few mistakes please make the following changes
slide 27 , Earthworm is Bisexual( hermaphrodite).
slide 28 , Pistillate - flowers with pistil.
slide 29 and slide 30 - ignore that .
Reproduction in organisms
Sexual reproduction involves the union of genetic material from two parents - a male gamete and a female gamete - to produce a genetically distinct offspring. There are many different modes of asexual reproduction in organisms, including binary fission in unicellular organisms, budding, fragmentation, spore formation, and vegetative reproduction through various plant structures like roots, stems, leaves, runners, and offsets. Asexual reproduction results in offspring that are genetically identical to the parent, while sexual reproduction produces offspring with a new combination of genes from both parents.
Reproduction in organisms
The life spans of wild animals are typically observed to be shorter than in zoos, due to factors like infant mortality, disease, predators, weather, accidents, and competition for resources in natural conditions. Reproduction serves to replace individuals that die from aging or other causes, introduce variation for adaptability, and ensure the continuation of species. The basic features of reproduction include DNA replication, cell growth and division, and the formation and development of reproductive units that develop into new offspring. Organisms can reproduce either once in their lifetime (semelparous) or in successive cycles (iteroparous). Asexual reproduction occurs via budding, fission, fragmentation or regeneration, while sexual reproduction involves syngamy or the fusion of
Rep 1
Reproduction is essential for all living beings to continue their lineage. It occurs through either asexual or sexual reproduction. Asexual reproduction involves a single parent and no gamete formation, while sexual reproduction involves two parents and gamete formation with meiosis. Reproduction is important at the individual, population, and ecosystem levels as it drives evolution over generations and maintains balances within ecosystems. Common forms of asexual reproduction in simple organisms include binary fission, multiple fission, budding, fragmentation, regeneration, and spore formation.
Reproduction in organisms
Reproduction is essential for species survival as it allows the transmission of genetic material between generations. The life span of organisms can vary greatly from just a few minutes to thousands of years. Reproduction can occur asexually through processes like budding, fragmentation, and fission, or sexually which involves the fusion of male and female gametes. In sexual reproduction, gametes are produced through meiosis and then fuse during fertilization, either internally or externally, forming a diploid zygote. The zygote then undergoes embryogenesis developing into a new organism.
Class 10 reprdn
Reproduction allows organisms to produce new individuals of their own kind. There are two main types: asexual reproduction, which involves a single parent and no gamete formation, and sexual reproduction, which involves two parents and the production of offspring. Variation between individuals can arise from genetic or environmental factors. Examples of asexual reproduction in single-celled organisms include binary fission in amoeba and multiple fission in plasmodium.
Reproduction in organism NCERT Question and Answer by mohanbio2013
1. Reproduction, both sexual and asexual, is essential for continuity of life on Earth and evolution.
2. Sexual reproduction introduces genetic variation which allows offspring to better adapt to the environment, whereas asexual reproduction produces clones of the parent.
3. Vegetative reproduction, like runners and rhizomes, is a form of asexual reproduction where new plants are produced from fragments of the parent plant.
Reproduction in organism
This document defines asexual reproduction and describes some types. It discusses:
1) Asexual reproduction involves only one parent and does not involve meiosis, gamete formation, fertilization, or genetic transfer. It is a means of rapid multiplication.
2) Examples of asexual reproduction include binary fission in bacteria, protozoa, and planaria. Binary fission in bacteria involves DNA replication and cell division.
3) Multiple fission occurs in plasmodium and amoeba, allowing them to produce many daughter cells at once. Sporulation helps organisms survive unfavorable conditions and disperse to new locations.
Reproduction in organism | Class XII | Biology
The PPT Contains data of Chapter 1 class XII Biology as per NCERT.
For videos and more content of same type visit my youtube channel NEET Is Mine :- https://www.youtube.com/channel/UCOB-92DeZbRD7xPUoo9VP1w/featured
For direct content join telegram channel https://t.me/NeetIsMine.
Thanks
3. how do organism reproduce
Here are the key points about the female reproductive system:
- Ovaries are the site of ovum (egg) production
- Ovaries are also the site of estrogen and progesterone hormone production
- Fallopian tubes connect the ovaries to the uterus and allow the ovum to move towards the uterus
- The uterus provides a nourishing environment for embryo development if fertilization occurs
- The cervix connects the uterus to the vagina
- The vagina is the site of intercourse and menstrual flow exits through it
- The ovum consists of 23 haploid chromosomes (22 autosomes + X chromosome)
- Estrogen brings about changes seen in girls during puberty like breast development
-
Reproduction in organisms, Life cycle phases, Asexual and sexual reproduction...
Reproduction in organisms, Life cycle phases, Asexual and sexual reproduction...HARINATHA REDDY ASWARTHA
Asexual reproduction involves a single parent that replicates through mechanisms such as budding, fragmentation, and spore formation to produce genetically identical offspring. Sexual reproduction requires two parents of opposite sex where male and female gametes fuse and the resulting zygote undergoes embryogenesis. Organisms exhibit different types of life cycles including annual, biennial, and perennial as well as seasonal and continuous breeding patterns. The process of sexual reproduction involves gametogenesis, gamete transfer through internal or external fertilization, zygote formation, and embryogenesis.How Do Organisms Reproduce?
1. Reproduction is the process by which living organisms produce new individuals of the same species through asexual or sexual reproduction. It is necessary for survival and increasing population size.
2. Asexual reproduction involves a single parent and methods include fission, budding, regeneration, fragmentation, and spore formation. Sexual reproduction involves two parents fusing male and female gametes.
3. In humans, sexual reproduction involves the male and female reproductive systems. Fertilization occurs when sperm fuse with eggs in the fallopian tubes, and the embryo implants in the uterus for gestation.
Asexual Reproduction
The document discusses asexual reproduction, which is reproduction that requires only one parent. It defines several forms of asexual reproduction including regeneration, budding, binary fission, and mitosis. Budding is when a new organism develops from a protrusion on the parent organism. Regeneration occurs when an organism breaks into parts that can each grow into a new organism. Binary fission is the process that single-celled prokaryotes use to reproduce. Mitosis is the process that eukaryotic cells use to replicate their DNA and divide.
reproduction in organisms in cells division
defined as a biological process in
which an organism gives rise to
young ones (offspring) similar to
itself.
Asexual reproduction:
Offsprings produced by single
parents.
Without involvement of gamete
formation
Offsprings are genetically
identical to their parentsCell division as a method of asexual
reproduction as in Protista and monera.
Binary fission e.g. Amoeba, Paramecium.
Budding: e.g. yeast.
Asexual reproductive structures:
Zoospores: aquatic fungi, Chlamydomonas.
Conidia: Penicillium.
Bud: Hydra
Gemmules: sponges.
Vegetative propagation units in plant:
(Vegetative propagules)
Runner, rhizome, sucker, tuber, offset, bulb.
HOW DO ORGANISMS REPRODUCE
Asexual reproduction in amoeba occurs through binary fission. The amoeba cell divides through mitosis to form two identical daughter cells. Each daughter cell is an exact clone of the parent cell. Binary fission allows for rapid multiplication of amoeba in favorable environmental conditions. The contractile vacuole acts to regulate the amoeba's water content through osmosis, as the cell takes in more water than its surroundings. It repeatedly swells and bursts to expel excess water from the cell.
How do organisms reproduce
This document provides information about reproduction in various organisms. It discusses how reproduction allows for the transfer of DNA from parents to offspring, ensuring survival of species. It notes that while DNA copying is important for maintaining body designs, variations in offspring through small changes in DNA allow for adaptation to changing environments and evolution of new species. The document then describes different types of reproduction like asexual reproduction, which produces offspring from a single parent through processes like budding and spore formation, and sexual reproduction, which involves two parents fusing male and female gametes. It provides details on human sexual reproduction and pregnancy.
Reproduction in Organism - NEET biology
This document discusses various types and modes of reproduction in organisms. It describes asexual reproduction methods like fission, budding, fragmentation seen in organisms like amoeba, hydra, spirogyra. Sexual reproduction involves gamete fusion in plants and algae. In flowering plants, methods of vegetative propagation through cuttings, grafting, layering are explained. The document also covers external and internal fertilization, zygote formation, embryonic development in animals and unusual reproductive phenomena seen in some plants.
Reproduction in organisms.
1. Reproduction can occur asexually through budding or cell division without gametes, producing offspring that are genetically identical to the parent, or sexually through the fusion of male and female gametes during fertilization, producing offspring with genetic variation.
2. Gametogenesis is the process where haploid gametes are produced through meiosis in diploid organisms or mitosis in haploid organisms.
3. Fertilization occurs internally or externally when the gametes fuse, forming a diploid zygote that undergoes embryogenesis to develop into a new organism.
Reproduction Types of reproduction 10th class chapter
This document discusses various types of asexual reproduction in organisms. It describes mechanisms such as binary fission, budding, vegetative propagation, spore formation, fragmentation, parthenogenesis, and apomixis. It notes that asexual reproduction is common in single-celled organisms and plants but relatively rare in animals. While it provides short term benefits, sexual reproduction allows for more genetic diversity and adaptation to changing environments. The document also discusses alternation between sexual and asexual reproduction in some species and inheritance of asexual reproduction traits.
Reproduction
Reproduction allows living things to produce new individuals. There are two main types: asexual reproduction, which requires one parent, and sexual reproduction. Asexual reproduction occurs through several methods including sporulation, fragmentation, regeneration, binary fission, budding, and vegetative propagation. Sporulation involves reproductive cells called spores forming a new organism under the right conditions. Binary fission involves a parent cell dividing into two genetically identical daughter cells. Budding occurs when an outgrowth from the parent develops and detaches to form a new offspring.
Reproduction in organism 2014 mohanbio
This document discusses reproduction in organisms. It begins by defining the life span of organisms and noting that reproduction enables continuity of species across generations. The main types of reproduction are asexual, which produces genetically identical offspring via budding or binary fission, and sexual, which involves the fusion of male and female gametes. In plants, asexual reproduction includes vegetative processes like stolons and rhizomes, while sexual reproduction uses pollination and fertilization to produce seeds. The zygote develops into an embryo through embryogenesis. Reproduction can be external or internal, and offspring may be oviparous, viviparous, or ovoviviparous.
Reproduction
There are two main types of reproduction: asexual and sexual. Asexual reproduction requires only one parent and produces offspring that are genetically identical clones. It occurs through binary fission, budding, or fragmentation. Sexual reproduction requires two parents and produces offspring with genetic variations from the parents. It can occur through external fertilization in water or internal fertilization within the female's body. Sexual reproduction creates more genetic diversity to help species adapt and survive.
Rep part 2
Fertilization is the process where two gametes (reproductive cells with a single set of chromosomes) fuse to form a zygote. This can occur through cross-fertilization between two individuals or self-fertilization within a single individual. In plants, sexual reproduction involves flowers with reproductive and vegetative parts, pollination to transfer pollen grains, and double fertilization where one sperm cell fuses with the egg and the other with polar nuclei. In animals, males have testes that produce sperm and hormones, while females have ovaries, uterus, and hormones to support fertilization, implantation, and pregnancy protected by the placenta.
Biology chapter wise important questions
Chapter wise important questions in Biology for Karnataka 2 year PU Science students. This is taken from the PU board website and compiled together.
Reproduction in organisms
The document provides information about the stages in the life cycle of sexually reproducing organisms. It discusses the juvenile, reproductive, and post-reproductive phases. It describes gamete formation through meiosis in diploid organisms. Fertilization and zygote formation are explained, along with the internal and external fertilization processes. The document outlines the embryogenesis process in both animals and plants, and the differences between oviparous and viviparous reproduction. It also summarizes the different life cycles of organisms and the post-fertilization development of the embryo.
PED 101 GROUP 2 APPLICATION-converted.pptx
This document contains a discussion of human development principles from the perspective of future educators. It discusses key concepts like growth being evidence of life, defining development, outlining 5 principles of human development, examining cephalocaudal and proximodistal patterns of growth, and reflecting on quotes related to the complexity and uniqueness of human development. The overall purpose is to equip future educators with an understanding of human development patterns and processes.
Growth and development
The document discusses the key differences between growth and development. It defines growth as a quantitative increase in body size, height, and weight, while development refers to qualitative changes that result in improved functioning. Growth mainly affects physical maturation and stops at maturity, whereas development is a continuous process from birth to death that includes physical, intellectual, emotional and social changes. The document also outlines several principles of development, including that it is a continuous process that follows an orderly pattern from general to specific responses and is influenced by both heredity and the environment.
More Related Content
What's hot
Class 10 reprdn
Reproduction allows organisms to produce new individuals of their own kind. There are two main types: asexual reproduction, which involves a single parent and no gamete formation, and sexual reproduction, which involves two parents and the production of offspring. Variation between individuals can arise from genetic or environmental factors. Examples of asexual reproduction in single-celled organisms include binary fission in amoeba and multiple fission in plasmodium.
Reproduction in organism NCERT Question and Answer by mohanbio2013
1. Reproduction, both sexual and asexual, is essential for continuity of life on Earth and evolution.
2. Sexual reproduction introduces genetic variation which allows offspring to better adapt to the environment, whereas asexual reproduction produces clones of the parent.
3. Vegetative reproduction, like runners and rhizomes, is a form of asexual reproduction where new plants are produced from fragments of the parent plant.
Reproduction in organism
This document defines asexual reproduction and describes some types. It discusses:
1) Asexual reproduction involves only one parent and does not involve meiosis, gamete formation, fertilization, or genetic transfer. It is a means of rapid multiplication.
2) Examples of asexual reproduction include binary fission in bacteria, protozoa, and planaria. Binary fission in bacteria involves DNA replication and cell division.
3) Multiple fission occurs in plasmodium and amoeba, allowing them to produce many daughter cells at once. Sporulation helps organisms survive unfavorable conditions and disperse to new locations.
Reproduction in organism | Class XII | Biology
The PPT Contains data of Chapter 1 class XII Biology as per NCERT.
For videos and more content of same type visit my youtube channel NEET Is Mine :- https://www.youtube.com/channel/UCOB-92DeZbRD7xPUoo9VP1w/featured
For direct content join telegram channel https://t.me/NeetIsMine.
Thanks
3. how do organism reproduce
Here are the key points about the female reproductive system:
- Ovaries are the site of ovum (egg) production
- Ovaries are also the site of estrogen and progesterone hormone production
- Fallopian tubes connect the ovaries to the uterus and allow the ovum to move towards the uterus
- The uterus provides a nourishing environment for embryo development if fertilization occurs
- The cervix connects the uterus to the vagina
- The vagina is the site of intercourse and menstrual flow exits through it
- The ovum consists of 23 haploid chromosomes (22 autosomes + X chromosome)
- Estrogen brings about changes seen in girls during puberty like breast development
-
Reproduction in organisms, Life cycle phases, Asexual and sexual reproduction...
Reproduction in organisms, Life cycle phases, Asexual and sexual reproduction...HARINATHA REDDY ASWARTHA
Asexual reproduction involves a single parent that replicates through mechanisms such as budding, fragmentation, and spore formation to produce genetically identical offspring. Sexual reproduction requires two parents of opposite sex where male and female gametes fuse and the resulting zygote undergoes embryogenesis. Organisms exhibit different types of life cycles including annual, biennial, and perennial as well as seasonal and continuous breeding patterns. The process of sexual reproduction involves gametogenesis, gamete transfer through internal or external fertilization, zygote formation, and embryogenesis.How Do Organisms Reproduce?
1. Reproduction is the process by which living organisms produce new individuals of the same species through asexual or sexual reproduction. It is necessary for survival and increasing population size.
2. Asexual reproduction involves a single parent and methods include fission, budding, regeneration, fragmentation, and spore formation. Sexual reproduction involves two parents fusing male and female gametes.
3. In humans, sexual reproduction involves the male and female reproductive systems. Fertilization occurs when sperm fuse with eggs in the fallopian tubes, and the embryo implants in the uterus for gestation.
Asexual Reproduction
The document discusses asexual reproduction, which is reproduction that requires only one parent. It defines several forms of asexual reproduction including regeneration, budding, binary fission, and mitosis. Budding is when a new organism develops from a protrusion on the parent organism. Regeneration occurs when an organism breaks into parts that can each grow into a new organism. Binary fission is the process that single-celled prokaryotes use to reproduce. Mitosis is the process that eukaryotic cells use to replicate their DNA and divide.
reproduction in organisms in cells division
defined as a biological process in
which an organism gives rise to
young ones (offspring) similar to
itself.
Asexual reproduction:
Offsprings produced by single
parents.
Without involvement of gamete
formation
Offsprings are genetically
identical to their parentsCell division as a method of asexual
reproduction as in Protista and monera.
Binary fission e.g. Amoeba, Paramecium.
Budding: e.g. yeast.
Asexual reproductive structures:
Zoospores: aquatic fungi, Chlamydomonas.
Conidia: Penicillium.
Bud: Hydra
Gemmules: sponges.
Vegetative propagation units in plant:
(Vegetative propagules)
Runner, rhizome, sucker, tuber, offset, bulb.
HOW DO ORGANISMS REPRODUCE
Asexual reproduction in amoeba occurs through binary fission. The amoeba cell divides through mitosis to form two identical daughter cells. Each daughter cell is an exact clone of the parent cell. Binary fission allows for rapid multiplication of amoeba in favorable environmental conditions. The contractile vacuole acts to regulate the amoeba's water content through osmosis, as the cell takes in more water than its surroundings. It repeatedly swells and bursts to expel excess water from the cell.
How do organisms reproduce
This document provides information about reproduction in various organisms. It discusses how reproduction allows for the transfer of DNA from parents to offspring, ensuring survival of species. It notes that while DNA copying is important for maintaining body designs, variations in offspring through small changes in DNA allow for adaptation to changing environments and evolution of new species. The document then describes different types of reproduction like asexual reproduction, which produces offspring from a single parent through processes like budding and spore formation, and sexual reproduction, which involves two parents fusing male and female gametes. It provides details on human sexual reproduction and pregnancy.
Reproduction in Organism - NEET biology
This document discusses various types and modes of reproduction in organisms. It describes asexual reproduction methods like fission, budding, fragmentation seen in organisms like amoeba, hydra, spirogyra. Sexual reproduction involves gamete fusion in plants and algae. In flowering plants, methods of vegetative propagation through cuttings, grafting, layering are explained. The document also covers external and internal fertilization, zygote formation, embryonic development in animals and unusual reproductive phenomena seen in some plants.
Reproduction in organisms.
1. Reproduction can occur asexually through budding or cell division without gametes, producing offspring that are genetically identical to the parent, or sexually through the fusion of male and female gametes during fertilization, producing offspring with genetic variation.
2. Gametogenesis is the process where haploid gametes are produced through meiosis in diploid organisms or mitosis in haploid organisms.
3. Fertilization occurs internally or externally when the gametes fuse, forming a diploid zygote that undergoes embryogenesis to develop into a new organism.
Reproduction Types of reproduction 10th class chapter
This document discusses various types of asexual reproduction in organisms. It describes mechanisms such as binary fission, budding, vegetative propagation, spore formation, fragmentation, parthenogenesis, and apomixis. It notes that asexual reproduction is common in single-celled organisms and plants but relatively rare in animals. While it provides short term benefits, sexual reproduction allows for more genetic diversity and adaptation to changing environments. The document also discusses alternation between sexual and asexual reproduction in some species and inheritance of asexual reproduction traits.
Reproduction
Reproduction allows living things to produce new individuals. There are two main types: asexual reproduction, which requires one parent, and sexual reproduction. Asexual reproduction occurs through several methods including sporulation, fragmentation, regeneration, binary fission, budding, and vegetative propagation. Sporulation involves reproductive cells called spores forming a new organism under the right conditions. Binary fission involves a parent cell dividing into two genetically identical daughter cells. Budding occurs when an outgrowth from the parent develops and detaches to form a new offspring.
Reproduction in organism 2014 mohanbio
This document discusses reproduction in organisms. It begins by defining the life span of organisms and noting that reproduction enables continuity of species across generations. The main types of reproduction are asexual, which produces genetically identical offspring via budding or binary fission, and sexual, which involves the fusion of male and female gametes. In plants, asexual reproduction includes vegetative processes like stolons and rhizomes, while sexual reproduction uses pollination and fertilization to produce seeds. The zygote develops into an embryo through embryogenesis. Reproduction can be external or internal, and offspring may be oviparous, viviparous, or ovoviviparous.
Reproduction
There are two main types of reproduction: asexual and sexual. Asexual reproduction requires only one parent and produces offspring that are genetically identical clones. It occurs through binary fission, budding, or fragmentation. Sexual reproduction requires two parents and produces offspring with genetic variations from the parents. It can occur through external fertilization in water or internal fertilization within the female's body. Sexual reproduction creates more genetic diversity to help species adapt and survive.
Rep part 2
Fertilization is the process where two gametes (reproductive cells with a single set of chromosomes) fuse to form a zygote. This can occur through cross-fertilization between two individuals or self-fertilization within a single individual. In plants, sexual reproduction involves flowers with reproductive and vegetative parts, pollination to transfer pollen grains, and double fertilization where one sperm cell fuses with the egg and the other with polar nuclei. In animals, males have testes that produce sperm and hormones, while females have ovaries, uterus, and hormones to support fertilization, implantation, and pregnancy protected by the placenta.
Biology chapter wise important questions
Chapter wise important questions in Biology for Karnataka 2 year PU Science students. This is taken from the PU board website and compiled together.
Reproduction in organisms
The document provides information about the stages in the life cycle of sexually reproducing organisms. It discusses the juvenile, reproductive, and post-reproductive phases. It describes gamete formation through meiosis in diploid organisms. Fertilization and zygote formation are explained, along with the internal and external fertilization processes. The document outlines the embryogenesis process in both animals and plants, and the differences between oviparous and viviparous reproduction. It also summarizes the different life cycles of organisms and the post-fertilization development of the embryo.
What's hot (20)
Reproduction in organism NCERT Question and Answer by mohanbio2013
Reproduction in organism NCERT Question and Answer by mohanbio2013
Reproduction in organisms, Life cycle phases, Asexual and sexual reproduction...
Reproduction in organisms, Life cycle phases, Asexual and sexual reproduction...
Reproduction Types of reproduction 10th class chapter
Reproduction Types of reproduction 10th class chapter
Similar to Introduction to reproduction in organisms class 12 cbse
PED 101 GROUP 2 APPLICATION-converted.pptx
This document contains a discussion of human development principles from the perspective of future educators. It discusses key concepts like growth being evidence of life, defining development, outlining 5 principles of human development, examining cephalocaudal and proximodistal patterns of growth, and reflecting on quotes related to the complexity and uniqueness of human development. The overall purpose is to equip future educators with an understanding of human development patterns and processes.
Growth and development
The document discusses the key differences between growth and development. It defines growth as a quantitative increase in body size, height, and weight, while development refers to qualitative changes that result in improved functioning. Growth mainly affects physical maturation and stops at maturity, whereas development is a continuous process from birth to death that includes physical, intellectual, emotional and social changes. The document also outlines several principles of development, including that it is a continuous process that follows an orderly pattern from general to specific responses and is influenced by both heredity and the environment.
3-growthndevelopmentwithprinciples-100725085356-phpapp02.pptx
This document discusses growth and development in psychology. It defines growth as an increase in size, while development refers to qualitative changes resulting in improved functioning. Growth is quantitative and can be measured, while development describes overall qualitative changes in an individual. The document also outlines seven principles of development, including continuous, orderly, and sequential development from general to specific. It notes development is influenced by both heredity and environment, as well as the interaction of maturation and learning.
Biology
Biology is the study of life. Life is defined as the property of organisms to take in food and energy, reproduce, and adapt to their environment. The key characteristics of life include reproduction, heredity, adaptation, response to stimuli, and defined life cycles from birth to death.
Lifespan and reproduction
1) The document discusses lifespan and reproduction in organisms. It provides examples of lifespans ranging from 2-3 weeks for butterflies to 200-300 years for banyan trees.
2) It describes three survivorship curves that track organism mortality rates - Type I has low early death rates, Type III has high early mortality, and Type II has constant rates.
3) The document also discusses asexual and sexual reproduction. Asexual reproduction involves a single parent and produces genetically identical offspring through processes like budding. Sexual reproduction involves gamete formation and fusion between two parents.
growth development final.pptx
Growth and development in children occurs in an orderly process defined by certain laws and principles. Growth refers to an increase in size due to cell multiplication and hypertrophy. It is assessed through anthropometric measurements like height, weight, head circumference etc. Development involves functional and physiological maturation and is influenced by prenatal, neonatal, social and protective factors. Both growth and development are unique for each child and follow cephalocaudal and proximodistal patterns. Key milestones are used to evaluate motor, language, personal-social and other domains of development. Regular screening aids early detection of deviations from normal patterns.
CHILDHOOD AND GROWING UP
This PPT prepared by Teacher Educator from Thiagarajar College of Preceptor-Madurai for B.Ed Trainees.
Population ecology
This document discusses various population characteristics and dynamics. It defines a population as a group of the same species living together in a region. Population ecology studies populations and their interactions with the environment. Key population characteristics include density, natality, mortality, growth forms, and distribution. Density refers to the number of individuals per unit area or volume. Natality is birth rate and mortality is death rate. Other concepts covered include survivorship curves, dispersion patterns, age structure through age pyramids, and population dispersal through emigration, immigration, and migration.
Basic human needs, growth and development
The document discusses human growth and development from conception through adulthood. It covers prenatal development from fertilization through the fetal stages. It then addresses development in newborns, infants, toddlers, preschoolers, school-aged children, and adolescents. The document also discusses Maslow's hierarchy of human needs and how nurses can meet patients' physiological, safety, love, esteem, and self-actualization needs. Finally, it examines the implications of understanding human needs and development for holistic nursing care.
Pre pubertal growth spurt
The document discusses various growth spurts that occur during development, including:
1. The pre-pubertal growth spurt, which occurs in girls from ages 11-12 and boys from ages 14-15.
2. Other growth spurts include the infantile/childhood growth spurt around age 3, and the juvenile/mixed dentition growth spurt from ages 6-7 in girls and 7-9 in boys.
3. Growth occurs through cellular differentiation and multiplication, with growth rates increasing until birth and decreasing thereafter, resulting in growth appearing in "spurts" potentially linked to changes in hormonal secretion.
Physical Education: Sports Psychology
Sports Psycholgy
growth and Development through Physical Activity
Growth Meaning
Development:Meaning
Various Stages of Life
Prenatal
Postnatal
Infancy
Childhood
Adolescence
Adulthood
Old age
Importance of Physical Activity for Childern
Children and Physical Activity
Growth n development with principles
Growth refers to increases in size and weight, while development describes qualitative changes that lead to improved functioning. There are seven principles of development: continuous development from birth to death, progression from general to specific changes, sequential changes like puberty following physical maturity, unique timing of changes in each individual, interrelated social, mental, and emotional development, interaction between heredity and environment, and interaction between maturation and learning. Development involves physical, intellectual, emotional, and social growth over one's lifetime.
Developmental Psychology.pptx
This document provides an overview of human development from fertilization through gestation. It discusses the key stages of prenatal development including the germinal stage, embryonic stage, and fetal stage. During the embryonic stage from 2-8 weeks, the major body systems and organs develop and the embryo is most vulnerable to environmental influences. The fetal stage from 8-12 weeks until birth involves continued growth and maturation of organs and systems. Milestones at various gestational ages like 8, 10, 12, 14, and 16 weeks are outlined.
Developmental periods
The document summarizes the developmental periods of humans as described in the Quran. It discusses:
1. The prenatal periods of embryo and fetus, with Quranic terms like nutfah, 'alaqah, and mudghah used to describe stages of development.
2. The postnatal periods of neonatal, infancy, childhood, puberty, adolescence, adulthood, and old age.
3. Key physical and developmental milestones during each period such as tooth development, sexual maturity, and physical growth.
Developmental psychology - Unit 1
The document discusses the stages of human development from fertilization through gestation and childbirth. It covers conception and prenatal development from zygote to embryo to fetus. The major fetal development stages are described in detail from 8 to 40 weeks of gestation. Childbirth is summarized as occurring in three stages: cervical dilation, baby's descent and emergence, and placenta expulsion. Various methods of childbirth like vaginal, C-section, home, and medicated births are also mentioned.
Growth and development,Dr.Lise Rose Tom
This document provides an overview of growth and development, including key concepts and factors that influence physical growth. It discusses how growth occurs through differential rates in various parts of the body from embryology through adulthood. Growth spurts and the cephalo-caudal gradient of growth are described. Methods for studying and measuring growth longitudinally, cross-sectionally, and through craniometry, anthropometry, and cephalometric radiology are summarized.
The Living World Biology Class notes for NEET preparation
This document discusses key characteristics of living organisms:
1) Growth, reproduction, metabolism, cellular organization, and consciousness are common characteristics of living things, but metabolism is the defining characteristic as it has no exceptions.
2) Reproduction produces new individuals of the same kind, though some organisms are sterile or infertile.
3) The diversity of living organisms on Earth, known as biodiversity, includes over 1.7-1.8 million currently known and described species of plants, animals, and microorganisms inhabiting different habitats.
Morrisoneb Human Life Cycle
The document provides information about the human life cycle, including its different stages from birth through adulthood. It includes vocabulary terms, assignments, videos, charts and questions to help students learn about the stages of development. Key stages discussed include infancy, childhood, adolescence and adulthood. The document aims to educate students on the typical physical, mental and emotional changes that occur as humans progress through life.
Similar to Introduction to reproduction in organisms class 12 cbse (20)
3-growthndevelopmentwithprinciples-100725085356-phpapp02.pptx
3-growthndevelopmentwithprinciples-100725085356-phpapp02.pptx
The Living World Biology Class notes for NEET preparation
The Living World Biology Class notes for NEET preparation
Recently uploaded
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
How to Build a Module in Odoo 17 Using the Scaffold Method
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Aberdeen
DRUGS AND ITS classification slide share
Any substance (other than food) that is used to prevent, diagnose, treat, or relieve symptoms of a
disease or abnormal condition
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Digital Artifact 1 - 10VCD Environments Unit
Digital Artifact 1 - 10VCD Environments Unit - NGV Pavilion Concept Design
How to Add Chatter in the odoo 17 ERP Module
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
BBR 2024 Summer Sessions Interview Training
Qualitative research interview training by Professor Katrina Pritchard and Dr Helen Williams
The Diamonds of 2023-2024 in the IGRA collection
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Main Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama UniversityAkanksha trivedi rama nursing college kanpur.
Natural birth techniques are various type such as/ water birth , alexender method, hypnosis, bradley method, lamaze method etcRecently uploaded (20)
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Introduction to reproduction in organisms class 12 cbse
- 1. R E P R O D U C T I O N I N O R G A N I S M S - N I D H I TAYA L
- 3. Now, what is REPRODUCTION ? Like if we say in basic terms, RE-PRODUCTION simply means process of recreation of a similar kind of individual to that of existing individual. DEFINITION: • Reproduction is defined as a biological process in which an organism gives rise to young ones (offspring) similar to itself. • The offspring grow, mature and in turn produce new offspring. offspring. • Thus, there is a cycle of birth, growth and death.
- 4. WHY DO WE NEED THE PROCESS OF REPRODUCTION ? • Each and every organism can live only for a certain period of time. • The period from birth to the natural death of an organism represents its life span. • In order to maintain continuity of life , reproduction becomes essential . Reproduction enables the continuity of the species, generation after generation.
- 5. LIFE SPAN • Life span varies from individual to individual and to species of different organisms. • It does not depends on size of the individual. For example: I n crow and parrot, the size has a negligible difference but the life span varies a lot. Crow (15 years) Parrot(140years)
- 6. LIFE SPAN OF VARIOUS ORGANISMS
- 7. • Whatever be the life span , the death of an individual is certain; no one is immortal. • However, an exception to this are the unicellular organism who do not have a natural death , but similar daughter cells. • The division of unicellular organisms and various types of reproduction will be discussed in further videos of the chapter.