Oedogonium.pptx
•Download as PPTX, PDF•
0 likes•109 views
This will help undergraduate students to get all required information about the genus Oedogonium of chlorophyceae
Report
Share
Report
Share
Recommended
Oedogonium
Oedogonium is a freshwater, filamentous green alga identified by rings formed at the ends of cells during cell division. It reproduces through both sexual and asexual means. Asexual reproduction occurs through fragmentation, zoospore formation, or aplanospore formation. Sexual reproduction is oogamous and can be either macrandrous or nannandrous. Fertilization occurs when sperm enter an egg, forming a zygote. The zygote produces a thick-walled oospore which undergoes meiosis to produce haploid zoospores that germinate into new haploid filaments.
Oedogonium
Oedogonium is a common freshwater green alga that grows as unbranched filaments attached to substrates by a basal holdfast cell. The filaments are made up of elongated cylindrical cells containing a single chloroplast. Reproduction can occur vegetatively through fragmentation, or sexually through the formation of zoospores or oogonia and antherozoids. Fertilization of an oogonium results in the formation of a resting oospore, which can germinate to form a new filament and complete the life cycle. Species can be either monoecious/dioecious or produce dwarf male filaments (nannandria) containing antheridia.
Plant kingdom-I
The topic discussed in the slides are the Thallophyta with more emphasis on the characteristic of the members of the Chlorophyceae, Phaeophyceae & Rhodophyceae. Their characteristic features, asexual & sexual reproduction and their economic importance have been discussed
Oedogonium
Oedogonium is a genus of filamentous green algae that reproduces both sexually and asexually. It has distinctive rings formed at cell divisions. Sexual reproduction involves the production of sperm by antheridia and eggs by oogonia, which can fuse to form zygotes. Zygotes and fragments of the algae can then develop into new filaments through asexual reproduction. Oedogonium is classified in the kingdom Protista, division Chlorophyta, class Chlorophyceae, and order Oedogonianles.
Saprolegnia
1) Saprolegnia is a genus of aquatic fungi that can be parasites on fish or their eggs, causing disease.
2) It has coenocytic, branching hyphae and reproduces asexually through zoospores formed in sporangia.
3) Sexually, it produces male antheridia and female oogonia, with fertilization occurring through fertilization tubes, forming thick-walled oospores.
Anthoceros
1. Anthoceros is a genus of hornworts that reproduces both vegetatively and sexually. It has a thallus-like structure and reproduces vegetatively through fragmentation, gemmae, tubers, and apospory.
2. Sexually, it is either dioecious or monoecious. Antheridia and archegonia develop on the dorsal surface of the thallus. Fertilization occurs when antherozoids are released from the antheridia and swim via chemotaxis to fertilize the egg in the archegonium, forming a zygote.
3. The zygote develops into a sporophyte that consists of a
Algae: general characters and classification
Algae are a diverse group of photosynthetic organisms that are distinguished by their lack of tissues, their predominantly aquatic habitat, and unicellular or multicellular thalli not differentiated into roots, stems, and leaves. They range in size from microscopic to large seaweeds and reproduce both sexually through gametes and asexually through cell division or fragmentation. Major divisions of algae are classified based on pigments, food storage, flagella structure, cell and thallus structure, and life cycles.
algae
Algae are defined as small autotrophic organisms that do not show differentiation of cells or tissues. Their reproductive organs are unicellular and all cells are fertile if multicellular. They range in size from microscopic to single-celled to large seaweeds. Algae are eukaryotic photoautotrophs that primarily inhabit aquatic habitats. They contain chloroplasts and carry out photosynthesis using pigments like chlorophyll.
Recommended
Oedogonium
Oedogonium is a freshwater, filamentous green alga identified by rings formed at the ends of cells during cell division. It reproduces through both sexual and asexual means. Asexual reproduction occurs through fragmentation, zoospore formation, or aplanospore formation. Sexual reproduction is oogamous and can be either macrandrous or nannandrous. Fertilization occurs when sperm enter an egg, forming a zygote. The zygote produces a thick-walled oospore which undergoes meiosis to produce haploid zoospores that germinate into new haploid filaments.
Oedogonium
Oedogonium is a common freshwater green alga that grows as unbranched filaments attached to substrates by a basal holdfast cell. The filaments are made up of elongated cylindrical cells containing a single chloroplast. Reproduction can occur vegetatively through fragmentation, or sexually through the formation of zoospores or oogonia and antherozoids. Fertilization of an oogonium results in the formation of a resting oospore, which can germinate to form a new filament and complete the life cycle. Species can be either monoecious/dioecious or produce dwarf male filaments (nannandria) containing antheridia.
Plant kingdom-I
The topic discussed in the slides are the Thallophyta with more emphasis on the characteristic of the members of the Chlorophyceae, Phaeophyceae & Rhodophyceae. Their characteristic features, asexual & sexual reproduction and their economic importance have been discussed
Oedogonium
Oedogonium is a genus of filamentous green algae that reproduces both sexually and asexually. It has distinctive rings formed at cell divisions. Sexual reproduction involves the production of sperm by antheridia and eggs by oogonia, which can fuse to form zygotes. Zygotes and fragments of the algae can then develop into new filaments through asexual reproduction. Oedogonium is classified in the kingdom Protista, division Chlorophyta, class Chlorophyceae, and order Oedogonianles.
Saprolegnia
1) Saprolegnia is a genus of aquatic fungi that can be parasites on fish or their eggs, causing disease.
2) It has coenocytic, branching hyphae and reproduces asexually through zoospores formed in sporangia.
3) Sexually, it produces male antheridia and female oogonia, with fertilization occurring through fertilization tubes, forming thick-walled oospores.
Anthoceros
1. Anthoceros is a genus of hornworts that reproduces both vegetatively and sexually. It has a thallus-like structure and reproduces vegetatively through fragmentation, gemmae, tubers, and apospory.
2. Sexually, it is either dioecious or monoecious. Antheridia and archegonia develop on the dorsal surface of the thallus. Fertilization occurs when antherozoids are released from the antheridia and swim via chemotaxis to fertilize the egg in the archegonium, forming a zygote.
3. The zygote develops into a sporophyte that consists of a
Algae: general characters and classification
Algae are a diverse group of photosynthetic organisms that are distinguished by their lack of tissues, their predominantly aquatic habitat, and unicellular or multicellular thalli not differentiated into roots, stems, and leaves. They range in size from microscopic to large seaweeds and reproduce both sexually through gametes and asexually through cell division or fragmentation. Major divisions of algae are classified based on pigments, food storage, flagella structure, cell and thallus structure, and life cycles.
algae
Algae are defined as small autotrophic organisms that do not show differentiation of cells or tissues. Their reproductive organs are unicellular and all cells are fertile if multicellular. They range in size from microscopic to single-celled to large seaweeds. Algae are eukaryotic photoautotrophs that primarily inhabit aquatic habitats. They contain chloroplasts and carry out photosynthesis using pigments like chlorophyll.
Vaucheria ppt.pptx
1. The document describes the algal genus Vaucheria, which has coenocytic, filamentous thalli.
2. Vaucheria reproduces through both asexual and sexual means. Asexually, it produces zoospores, aplanospores, and akinetes. Sexually, it produces antheridia and oogonia that undergo fertilization to form zygotes.
3. The zygotes develop thick walls called oospores that allow the alga to survive unfavorable conditions. When conditions improve, the oospores germinate to form new haploid thalli.
Algae (Sargassam , Porphyra , and Diatoms)
Sargassum is a genus of brown macroalgae found in tropical and temperate oceans. It has a main axis with branched laterals bearing air bladders and receptacles with flask-shaped conceptacles containing sex organs. Reproduction is both vegetative through fragmentation and sexually through antheridia and oogonia forming in conceptacles. Porphyra is an edible red algae commonly known as nori. It has a thin blade-like thallus attached by a holdfast. Cells contain stellate chromatophores. Reproduction is sexual through carpogonia and spermatangia or asexually through neutral spores. Diatoms are a large group of algae with beautiful
Kingdom Plantae presented by Vrushali Gharat to Mr. Kailash vilegave
Classification Of Kingdom Plantae, Classification Of Kingdom Plantae, Economic importance Algae.
Ulothrix
Reproduction
Mosses and Liverwort
life cycle of all plants.
Kingdom plantae by Sayali Diwan presented to Mr. Kailash Vilegave ( Navdhare ...
classification of plants. plant life cycle, reproduction in plants, description of each class in kingdom plantae.
Oedogonium Introduction, Features, Unique Characters and Life Cycle, Phycolog...
Oedogonium Introduction, Features, Unique Characters and Life Cycle, Phycolog...Muhammad Mubashir Ali
Introduction, Features, Unique Characters and Life Cycle of Oedogonium. This File Is best For Your Presentation.Furneria
- Funaria is a genus of moss that includes approximately 210 species, with 18 found in India. The most common species is Funaria hygrometrica.
- Funaria mosses are small, primitive, autotrophic plants that grow in dense patches in moist, shady areas. They reproduce both sexually through spores and asexually through fragmentation, gemmae, and bulbils.
- The life cycle involves an alternation of generations between the haploid gametophyte and diploid sporophyte phases. Fertilization occurs when sperm fertilize eggs within archegonia, forming diploid zygotes that develop into sporophytes.
Plant kingdom
This document provides information on the plant kingdom classification system. It discusses the historical and modern systems of classification for plants. The key types of classification systems discussed are artificial, natural, phylogenetic, and phenetic. The document also covers the main divisions of plants - cryptogams (non-flowering plants) and phanerogams (seed plants). It provides details on algae, bryophytes, and the characteristics and examples of major algal groups.
Diversity in living organisms ppt
The document describes the evolution of classification systems for living organisms from the original two kingdom system proposed by Linnaeus to the five kingdom system currently in use. It outlines the key characteristics used to classify organisms into the kingdoms of Monera, Protista, Fungi, Plantae, and Animalia. For each kingdom, it provides examples of phyla and details about their structures and traits. The hierarchical levels of classification from kingdom down to species are also defined.
Practical study of preserved invertebrate species and their practical study o...
I AM HAFIZ MUHAMMAD WASEEM from mailsi vehari
BSc from science college Multan
MSC university of education Lahore
i love Pakistan and my teachers
ALGAE (PLANT KINGDOM)
Algae are a diverse group of organisms that range from unicellular to multicellular forms. They are found in aquatic and terrestrial environments. Reproduction in algae can occur through vegetative, asexual, and sexual means. Vegetative reproduction is by fragmentation. Asexual reproduction is through spores like zoospores. Sexual reproduction involves fusion of gametes that can be isogamous, anisogamous, or oogamous. Algae are classified into three main groups - green algae, brown algae, and red algae - based on pigments and other characteristics.
Biodiversity kingdom plantae
This document discusses the biodiversity of plants and their reproduction. It defines what plants are, how they are adapted to different environments, and how they are classified. Plants are classified into five main groups: non-vascular plants (bryophytes), seedless vascular plants, algae, gymnosperms, and angiosperms. Each group is described in terms of their characteristics, anatomy, and sexual and asexual reproduction methods. Algae are further discussed including characteristics, types of asexual and sexual reproduction, and their life cycles.
CHARA.pptx
• Chara is fresh water green algae found submerged in shallow water ponds, tanks, lakes and slow running water.
• Chara is found mostly in hard fresh water, rich in organic matter, calcium and deficient in oxygen.
• Chara plants are often encrusted with calcium carbonate, and hence commonly known as stone wart.
Final ppt. in biodiversity
This document discusses the classification and characteristics of different algal groups, including:
- Fritsch classified algae into 11 classes including Chlorophyceae, Xanthophyceae, and Cyanophyceae.
- Algae exhibit diverse morphologies and habitats, from single-celled to complex thalli. They are found in various aquatic and terrestrial environments.
- Algae reproduce both sexually, through processes like isogamy and oogamy, and asexually, through fragmentation, spores, and cell division. Different algal groups display diverse reproductive strategies.
Diversity In Living Organisms
This document discusses the diversity of living organisms and their classification. It begins by explaining that all organisms are unique and diversity has arisen through evolution over millions of years. Organisms are classified based on their characteristics into hierarchical groups like domains, kingdoms, phyla etc. The major kingdoms discussed are Monera, Protista, Fungi, Plantae and Animalia. Within these, organisms are further classified into phyla, classes, orders, families, genera and species based on traits like cell structure, nutrition, body organization and complexity. This classification system helps to study and understand the immense biodiversity that exists.
Volvox.pptx
Volvox is a genus of multicellular green algae that forms spherical colonies called coenobia. The coenobia contain many individual cells connected by cytoplasmic strands. Volvox is found in freshwater throughout the world. It reproduces both sexually and asexually. Asexual reproduction occurs through the formation of daughter coenobia inside the parent coenobium. Sexual reproduction involves the formation of male antheridia and female oogonia, with fertilization occurring when the sperm from the antheridia fuse with the eggs in the oogonia to form zygotes. The zygotes develop into new coenobia, completing the life cycle.
Diversity in living organisms (ii term )
The document provides an overview of the classification of living organisms, including plants and animals. It discusses the main kingdoms of plants (Thallophyta, Bryophyta, Pteridophyta, etc.) and their characteristics. It also outlines the animal kingdom from simplest to most complex, discussing key phyla such as Porifera, Coelenterata, Platyhelminthes, etc. It concludes with describing the characteristics of main classes of vertebrates like Reptilia, Aves, Mammalia.
D I V E R S I T Y I N L I V I N G O R G A N I S M S ( I I T E R M )
The document provides an overview of the classification of living organisms, including plants and animals. It discusses the main kingdoms of plants (Thallophyta, Bryophyta, Pteridophyta, etc.) and their characteristics. It also outlines the animal kingdom from simplest to most complex, discussing key phyla such as Porifera, Coelenterata, Platyhelminthes, etc. It concludes with describing the characteristics of main classes of vertebrates like Reptilia, Aves, Mammalia.
Chapter_3_Kingdom_Plantae.pptx
Kingdom Plantae is divided into subkingdoms Cryptogams and Phanerogams. Cryptogams are spore-producing plants with concealed reproductive structures, while Phanerogams are seed-producing plants with visible reproductive structures. Phanerogams are further divided into gymnosperms and angiosperms. Gymnosperms include conifers and cycads which bear naked seeds, while angiosperms are flowering plants whose seeds are enclosed in fruits.
Endosperm
ENDOSPERM
Types
1. Nuclear Endosperm with examples
2. Cellular Endosperm with examples
3. Helobial Endosperm with examples
Diversity in living organisms utkarsh
The document describes the evolution of classification systems for life on Earth from early two-kingdom systems to the modern five-kingdom system. It outlines the kingdoms and characteristics of Linnaeus' original two-kingdom system, Haeckel's addition of a third kingdom (Protista), and the modern five-kingdom system including Monera, Protista, Fungi, Plantae, and Animalia. For each kingdom, it provides examples of phyla and key distinguishing features.
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
Class 10 human eye notes physics
Handwritten best quality
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.More Related Content
Similar to Oedogonium.pptx
Vaucheria ppt.pptx
1. The document describes the algal genus Vaucheria, which has coenocytic, filamentous thalli.
2. Vaucheria reproduces through both asexual and sexual means. Asexually, it produces zoospores, aplanospores, and akinetes. Sexually, it produces antheridia and oogonia that undergo fertilization to form zygotes.
3. The zygotes develop thick walls called oospores that allow the alga to survive unfavorable conditions. When conditions improve, the oospores germinate to form new haploid thalli.
Algae (Sargassam , Porphyra , and Diatoms)
Sargassum is a genus of brown macroalgae found in tropical and temperate oceans. It has a main axis with branched laterals bearing air bladders and receptacles with flask-shaped conceptacles containing sex organs. Reproduction is both vegetative through fragmentation and sexually through antheridia and oogonia forming in conceptacles. Porphyra is an edible red algae commonly known as nori. It has a thin blade-like thallus attached by a holdfast. Cells contain stellate chromatophores. Reproduction is sexual through carpogonia and spermatangia or asexually through neutral spores. Diatoms are a large group of algae with beautiful
Kingdom Plantae presented by Vrushali Gharat to Mr. Kailash vilegave
Classification Of Kingdom Plantae, Classification Of Kingdom Plantae, Economic importance Algae.
Ulothrix
Reproduction
Mosses and Liverwort
life cycle of all plants.
Kingdom plantae by Sayali Diwan presented to Mr. Kailash Vilegave ( Navdhare ...
classification of plants. plant life cycle, reproduction in plants, description of each class in kingdom plantae.
Oedogonium Introduction, Features, Unique Characters and Life Cycle, Phycolog...
Oedogonium Introduction, Features, Unique Characters and Life Cycle, Phycolog...Muhammad Mubashir Ali
Introduction, Features, Unique Characters and Life Cycle of Oedogonium. This File Is best For Your Presentation.Furneria
- Funaria is a genus of moss that includes approximately 210 species, with 18 found in India. The most common species is Funaria hygrometrica.
- Funaria mosses are small, primitive, autotrophic plants that grow in dense patches in moist, shady areas. They reproduce both sexually through spores and asexually through fragmentation, gemmae, and bulbils.
- The life cycle involves an alternation of generations between the haploid gametophyte and diploid sporophyte phases. Fertilization occurs when sperm fertilize eggs within archegonia, forming diploid zygotes that develop into sporophytes.
Plant kingdom
This document provides information on the plant kingdom classification system. It discusses the historical and modern systems of classification for plants. The key types of classification systems discussed are artificial, natural, phylogenetic, and phenetic. The document also covers the main divisions of plants - cryptogams (non-flowering plants) and phanerogams (seed plants). It provides details on algae, bryophytes, and the characteristics and examples of major algal groups.
Diversity in living organisms ppt
The document describes the evolution of classification systems for living organisms from the original two kingdom system proposed by Linnaeus to the five kingdom system currently in use. It outlines the key characteristics used to classify organisms into the kingdoms of Monera, Protista, Fungi, Plantae, and Animalia. For each kingdom, it provides examples of phyla and details about their structures and traits. The hierarchical levels of classification from kingdom down to species are also defined.
Practical study of preserved invertebrate species and their practical study o...
I AM HAFIZ MUHAMMAD WASEEM from mailsi vehari
BSc from science college Multan
MSC university of education Lahore
i love Pakistan and my teachers
ALGAE (PLANT KINGDOM)
Algae are a diverse group of organisms that range from unicellular to multicellular forms. They are found in aquatic and terrestrial environments. Reproduction in algae can occur through vegetative, asexual, and sexual means. Vegetative reproduction is by fragmentation. Asexual reproduction is through spores like zoospores. Sexual reproduction involves fusion of gametes that can be isogamous, anisogamous, or oogamous. Algae are classified into three main groups - green algae, brown algae, and red algae - based on pigments and other characteristics.
Biodiversity kingdom plantae
This document discusses the biodiversity of plants and their reproduction. It defines what plants are, how they are adapted to different environments, and how they are classified. Plants are classified into five main groups: non-vascular plants (bryophytes), seedless vascular plants, algae, gymnosperms, and angiosperms. Each group is described in terms of their characteristics, anatomy, and sexual and asexual reproduction methods. Algae are further discussed including characteristics, types of asexual and sexual reproduction, and their life cycles.
CHARA.pptx
• Chara is fresh water green algae found submerged in shallow water ponds, tanks, lakes and slow running water.
• Chara is found mostly in hard fresh water, rich in organic matter, calcium and deficient in oxygen.
• Chara plants are often encrusted with calcium carbonate, and hence commonly known as stone wart.
Final ppt. in biodiversity
This document discusses the classification and characteristics of different algal groups, including:
- Fritsch classified algae into 11 classes including Chlorophyceae, Xanthophyceae, and Cyanophyceae.
- Algae exhibit diverse morphologies and habitats, from single-celled to complex thalli. They are found in various aquatic and terrestrial environments.
- Algae reproduce both sexually, through processes like isogamy and oogamy, and asexually, through fragmentation, spores, and cell division. Different algal groups display diverse reproductive strategies.
Diversity In Living Organisms
This document discusses the diversity of living organisms and their classification. It begins by explaining that all organisms are unique and diversity has arisen through evolution over millions of years. Organisms are classified based on their characteristics into hierarchical groups like domains, kingdoms, phyla etc. The major kingdoms discussed are Monera, Protista, Fungi, Plantae and Animalia. Within these, organisms are further classified into phyla, classes, orders, families, genera and species based on traits like cell structure, nutrition, body organization and complexity. This classification system helps to study and understand the immense biodiversity that exists.
Volvox.pptx
Volvox is a genus of multicellular green algae that forms spherical colonies called coenobia. The coenobia contain many individual cells connected by cytoplasmic strands. Volvox is found in freshwater throughout the world. It reproduces both sexually and asexually. Asexual reproduction occurs through the formation of daughter coenobia inside the parent coenobium. Sexual reproduction involves the formation of male antheridia and female oogonia, with fertilization occurring when the sperm from the antheridia fuse with the eggs in the oogonia to form zygotes. The zygotes develop into new coenobia, completing the life cycle.
Diversity in living organisms (ii term )
The document provides an overview of the classification of living organisms, including plants and animals. It discusses the main kingdoms of plants (Thallophyta, Bryophyta, Pteridophyta, etc.) and their characteristics. It also outlines the animal kingdom from simplest to most complex, discussing key phyla such as Porifera, Coelenterata, Platyhelminthes, etc. It concludes with describing the characteristics of main classes of vertebrates like Reptilia, Aves, Mammalia.
D I V E R S I T Y I N L I V I N G O R G A N I S M S ( I I T E R M )
The document provides an overview of the classification of living organisms, including plants and animals. It discusses the main kingdoms of plants (Thallophyta, Bryophyta, Pteridophyta, etc.) and their characteristics. It also outlines the animal kingdom from simplest to most complex, discussing key phyla such as Porifera, Coelenterata, Platyhelminthes, etc. It concludes with describing the characteristics of main classes of vertebrates like Reptilia, Aves, Mammalia.
Chapter_3_Kingdom_Plantae.pptx
Kingdom Plantae is divided into subkingdoms Cryptogams and Phanerogams. Cryptogams are spore-producing plants with concealed reproductive structures, while Phanerogams are seed-producing plants with visible reproductive structures. Phanerogams are further divided into gymnosperms and angiosperms. Gymnosperms include conifers and cycads which bear naked seeds, while angiosperms are flowering plants whose seeds are enclosed in fruits.
Endosperm
ENDOSPERM
Types
1. Nuclear Endosperm with examples
2. Cellular Endosperm with examples
3. Helobial Endosperm with examples
Diversity in living organisms utkarsh
The document describes the evolution of classification systems for life on Earth from early two-kingdom systems to the modern five-kingdom system. It outlines the kingdoms and characteristics of Linnaeus' original two-kingdom system, Haeckel's addition of a third kingdom (Protista), and the modern five-kingdom system including Monera, Protista, Fungi, Plantae, and Animalia. For each kingdom, it provides examples of phyla and key distinguishing features.
Similar to Oedogonium.pptx (20)
Kingdom Plantae presented by Vrushali Gharat to Mr. Kailash vilegave
Kingdom Plantae presented by Vrushali Gharat to Mr. Kailash vilegave
Kingdom plantae by Sayali Diwan presented to Mr. Kailash Vilegave ( Navdhare ...
Kingdom plantae by Sayali Diwan presented to Mr. Kailash Vilegave ( Navdhare ...
Oedogonium Introduction, Features, Unique Characters and Life Cycle, Phycolog...
Oedogonium Introduction, Features, Unique Characters and Life Cycle, Phycolog...
Practical study of preserved invertebrate species and their practical study o...
Practical study of preserved invertebrate species and their practical study o...
D I V E R S I T Y I N L I V I N G O R G A N I S M S ( I I T E R M )
D I V E R S I T Y I N L I V I N G O R G A N I S M S ( I I T E R M )
Recently uploaded
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
Class 10 human eye notes physics
Handwritten best quality
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...
MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...ABHISHEK SONI NIMT INSTITUTE OF MEDICAL AND PARAMEDCIAL SCIENCES , GOVT PG COLLEGE NOIDA
Microbial interaction
Microorganisms interacts with each other and can be physically associated with another organisms in a variety of ways.
One organism can be located on the surface of another organism as an ectobiont or located within another organism as endobiont.
Microbial interaction may be positive such as mutualism, proto-cooperation, commensalism or may be negative such as parasitism, predation or competition
Types of microbial interaction
Positive interaction: mutualism, proto-cooperation, commensalism
Negative interaction: Ammensalism (antagonism), parasitism, predation, competition
I. Mutualism:
It is defined as the relationship in which each organism in interaction gets benefits from association. It is an obligatory relationship in which mutualist and host are metabolically dependent on each other.
Mutualistic relationship is very specific where one member of association cannot be replaced by another species.
Mutualism require close physical contact between interacting organisms.
Relationship of mutualism allows organisms to exist in habitat that could not occupied by either species alone.
Mutualistic relationship between organisms allows them to act as a single organism.
Examples of mutualism:
i. Lichens:
Lichens are excellent example of mutualism.
They are the association of specific fungi and certain genus of algae. In lichen, fungal partner is called mycobiont and algal partner is called
II. Syntrophism:
It is an association in which the growth of one organism either depends on or improved by the substrate provided by another organism.
In syntrophism both organism in association gets benefits.
Compound A
Utilized by population 1
Compound B
Utilized by population 2
Compound C
utilized by both Population 1+2
Products
In this theoretical example of syntrophism, population 1 is able to utilize and metabolize compound A, forming compound B but cannot metabolize beyond compound B without co-operation of population 2. Population 2is unable to utilize compound A but it can metabolize compound B forming compound C. Then both population 1 and 2 are able to carry out metabolic reaction which leads to formation of end product that neither population could produce alone.
Examples of syntrophism:
i. Methanogenic ecosystem in sludge digester
Methane produced by methanogenic bacteria depends upon interspecies hydrogen transfer by other fermentative bacteria.
Anaerobic fermentative bacteria generate CO2 and H2 utilizing carbohydrates which is then utilized by methanogenic bacteria (Methanobacter) to produce methane.
ii. Lactobacillus arobinosus and Enterococcus faecalis:
In the minimal media, Lactobacillus arobinosus and Enterococcus faecalis are able to grow together but not alone.
The synergistic relationship between E. faecalis and L. arobinosus occurs in which E. faecalis require folic acid
Compositions of iron-meteorite parent bodies constrainthe structure of the pr...
Magmatic iron-meteorite parent bodies are the earliest planetesimals in the Solar System,and they preserve information about conditions and planet-forming processes in thesolar nebula. In this study, we include comprehensive elemental compositions andfractional-crystallization modeling for iron meteorites from the cores of five differenti-ated asteroids from the inner Solar System. Together with previous results of metalliccores from the outer Solar System, we conclude that asteroidal cores from the outerSolar System have smaller sizes, elevated siderophile-element abundances, and simplercrystallization processes than those from the inner Solar System. These differences arerelated to the formation locations of the parent asteroids because the solar protoplane-tary disk varied in redox conditions, elemental distributions, and dynamics at differentheliocentric distances. Using highly siderophile-element data from iron meteorites, wereconstruct the distribution of calcium-aluminum-rich inclusions (CAIs) across theprotoplanetary disk within the first million years of Solar-System history. CAIs, the firstsolids to condense in the Solar System, formed close to the Sun. They were, however,concentrated within the outer disk and depleted within the inner disk. Future modelsof the structure and evolution of the protoplanetary disk should account for this dis-tribution pattern of CAIs.
Holsinger, Bruce W. - Music, body and desire in medieval culture [2001].pdf
Music and Medieval History
Embracing Deep Variability For Reproducibility and Replicability
Embracing Deep Variability For Reproducibility and ReplicabilityUniversity of Rennes, INSA Rennes, Inria/IRISA, CNRS
Embracing Deep Variability For Reproducibility and Replicability
Abstract: Reproducibility (aka determinism in some cases) constitutes a fundamental aspect in various fields of computer science, such as floating-point computations in numerical analysis and simulation, concurrency models in parallelism, reproducible builds for third parties integration and packaging, and containerization for execution environments. These concepts, while pervasive across diverse concerns, often exhibit intricate inter-dependencies, making it challenging to achieve a comprehensive understanding. In this short and vision paper we delve into the application of software engineering techniques, specifically variability management, to systematically identify and explicit points of variability that may give rise to reproducibility issues (eg language, libraries, compiler, virtual machine, OS, environment variables, etc). The primary objectives are: i) gaining insights into the variability layers and their possible interactions, ii) capturing and documenting configurations for the sake of reproducibility, and iii) exploring diverse configurations to replicate, and hence validate and ensure the robustness of results. By adopting these methodologies, we aim to address the complexities associated with reproducibility and replicability in modern software systems and environments, facilitating a more comprehensive and nuanced perspective on these critical aspects.
https://hal.science/hal-04582287
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS
+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
�
−
�
)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
�
Ca-rich population. Although such an object is too red for any low-
�
cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
�
) with
Λ
CDM. Therefore unlike low-
�
Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...
Neutralizing antibodies, pivotal in immune defense, specifically bind and inhibit viral pathogens, thereby playing a crucial role in protecting against and mitigating infectious diseases. In this slide, we will introduce what antibodies and neutralizing antibodies are, the production and regulation of neutralizing antibodies, their mechanisms of action, classification and applications, as well as the challenges they face.
TOPIC OF DISCUSSION: CENTRIFUGATION SLIDESHARE.pptx
Centrifugation is a powerful technique used in laboratories to separate components of a heterogeneous mixture based on their density. This process utilizes centrifugal force to rapidly spin samples, causing denser particles to migrate outward more quickly than lighter ones. As a result, distinct layers form within the sample tube, allowing for easy isolation and purification of target substances.
JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS
The pathway(s) to seeding the massive black holes (MBHs) that exist at the heart of galaxies in the present and distant Universe remains an unsolved problem. Here we categorise, describe and quantitatively discuss the formation pathways of both light and heavy seeds. We emphasise that the most recent computational models suggest that rather than a bimodal-like mass spectrum between light and heavy seeds with light at one end and heavy at the other that instead a continuum exists. Light seeds being more ubiquitous and the heavier seeds becoming less and less abundant due the rarer environmental conditions required for their formation. We therefore examine the different mechanisms that give rise to different seed mass spectrums. We show how and why the mechanisms that produce the heaviest seeds are also among the rarest events in the Universe and are hence extremely unlikely to be the seeds for the vast majority of the MBH population. We quantify, within the limits of the current large uncertainties in the seeding processes, the expected number densities of the seed mass spectrum. We argue that light seeds must be at least 103 to 105 times more numerous than heavy seeds to explain the MBH population as a whole. Based on our current understanding of the seed population this makes heavy seeds (Mseed > 103 M⊙) a significantly more likely pathway given that heavy seeds have an abundance pattern than is close to and likely in excess of 10−4 compared to light seeds. Finally, we examine the current state-of-the-art in numerical calculations and recent observations and plot a path forward for near-future advances in both domains.
Farming systems analysis: what have we learnt?.pptx
Presentation given at the official farewell of Prof Ken Gillet at Wageningen on 13 June 2024
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Context. The observation of several L-band emission sources in the S cluster has led to a rich discussion of their nature. However, a definitive answer to the classification of the dusty objects requires an explanation for the detection of compact Doppler-shifted Brγ emission. The ionized hydrogen in combination with the observation of mid-infrared L-band continuum emission suggests that most of these sources are embedded in a dusty envelope. These embedded sources are part of the S-cluster, and their relationship to the S-stars is still under debate. To date, the question of the origin of these two populations has been vague, although all explanations favor migration processes for the individual cluster members. Aims. This work revisits the S-cluster and its dusty members orbiting the supermassive black hole SgrA* on bound Keplerian orbits from a kinematic perspective. The aim is to explore the Keplerian parameters for patterns that might imply a nonrandom distribution of the sample. Additionally, various analytical aspects are considered to address the nature of the dusty sources. Methods. Based on the photometric analysis, we estimated the individual H−K and K−L colors for the source sample and compared the results to known cluster members. The classification revealed a noticeable contrast between the S-stars and the dusty sources. To fit the flux-density distribution, we utilized the radiative transfer code HYPERION and implemented a young stellar object Class I model. We obtained the position angle from the Keplerian fit results; additionally, we analyzed the distribution of the inclinations and the longitudes of the ascending node. Results. The colors of the dusty sources suggest a stellar nature consistent with the spectral energy distribution in the near and midinfrared domains. Furthermore, the evaporation timescales of dusty and gaseous clumps in the vicinity of SgrA* are much shorter ( 2yr) than the epochs covered by the observations (≈15yr). In addition to the strong evidence for the stellar classification of the D-sources, we also find a clear disk-like pattern following the arrangements of S-stars proposed in the literature. Furthermore, we find a global intrinsic inclination for all dusty sources of 60 ± 20◦, implying a common formation process. Conclusions. The pattern of the dusty sources manifested in the distribution of the position angles, inclinations, and longitudes of the ascending node strongly suggests two different scenarios: the main-sequence stars and the dusty stellar S-cluster sources share a common formation history or migrated with a similar formation channel in the vicinity of SgrA*. Alternatively, the gravitational influence of SgrA* in combination with a massive perturber, such as a putative intermediate mass black hole in the IRS 13 cluster, forces the dusty objects and S-stars to follow a particular orbital arrangement. Key words. stars: black holes– stars: formation– Galaxy: center– galaxies: star formation
Injection: Risks and challenges - Injection of CO2 into geological rock forma...
Presentation by Dr. Florian Krob, Workshop "Risks of CO2 storage - How can they be addressed and reduced?", 22.4.2024
Methods of grain storage Structures in India.pdf
•Post-harvestlossesaccountforabout10%oftotalfoodgrainsduetounscientificstorage,insects,rodents,micro-organismsetc.,
•Totalfoodgrainproductioninindiais311milliontonnesandstorageis145mt.InIndia,annualstoragelosseshavebeenestimated14mtworthofRs.7,000croreinwhichinsectsaloneaccountfornearlyRs.1,300crores.
•InIndiaoutofthetotalproduction,about30%ismarketablesurplus
•Remaining70%isretainedandstoredbyfarmersforconsumption,seed,feed.Hence,growerneedstoragefacilitytoholdaportionofproducetosellwhenthemarketingpriceisfavourable
•TradersandCo-operativesatmarketcentresneedstoragestructurestoholdgrainswhenthetransportfacilityisinadequate
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.
Recently uploaded (20)
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...
MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...
Introduction_Ch_01_Biotech Biotechnology course .pptx
Introduction_Ch_01_Biotech Biotechnology course .pptx
Compositions of iron-meteorite parent bodies constrainthe structure of the pr...
Compositions of iron-meteorite parent bodies constrainthe structure of the pr...
Holsinger, Bruce W. - Music, body and desire in medieval culture [2001].pdf
Holsinger, Bruce W. - Music, body and desire in medieval culture [2001].pdf
Embracing Deep Variability For Reproducibility and Replicability
Embracing Deep Variability For Reproducibility and Replicability
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...
Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...
TOPIC OF DISCUSSION: CENTRIFUGATION SLIDESHARE.pptx
TOPIC OF DISCUSSION: CENTRIFUGATION SLIDESHARE.pptx
Farming systems analysis: what have we learnt?.pptx
Farming systems analysis: what have we learnt?.pptx
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Injection: Risks and challenges - Injection of CO2 into geological rock forma...
Injection: Risks and challenges - Injection of CO2 into geological rock forma...
Juaristi, Jon. - El canon espanol. El legado de la cultura española a la civi...
Juaristi, Jon. - El canon espanol. El legado de la cultura española a la civi...
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Oedogonium.pptx
- 1. Filamentous green alga Nisar Ahmad Lone Assistant Professor , GDCW Bla
- 2. 400 species CLASSIFICATION Division Chlorophyta Class Chlorophyceae Order Oedogoniales Family Oedogoniaceae Genus Oedogonium 400 species
- 3. OCCURANCE Oedogonium is a fresh- water filamentous alga usually present in ponds, lakes and shallow tanks The filaments are attached to rocks, logs etc. or are epiphytic on aquatic plants and other algae Some species are terrestrial growing on moist soils
- 4. THALLUS STRUCTURE The Thallus of Oedogonium is multicellular, filamentous, unbranched, uniseriate All cells except basal and apical cell cylindrical and alike Basal cell non-green Holdfast Apical cell rounded or accuminate Cap cells a distinctive feature
- 5. CELL STRUCTURE Each cell is cylindrical with a rigid cell wall 3 layers – outer chitin, middle pectin and inner cellulose layer Protoplasm peripheral Nucleus lies in the middle region of the cell Chloroplast reticulate with pyrenoids present at the intersections of the chloroplast reticulum In some cells apical caps are present – cap cells
- 6. GROWTH AND CELL DIVISION Growth takes place as a result of divisions in the intercalary cells All cells except holdfast and apical cell capable of division Formation of ring of wall material in the upper part of the cell Nucleus moves to the centre of the cell and divides mitoticaally An unattached floating septum is laid down between two daughter nuclei The ring of the wall material now elongates, causing a split the wall near the apical ring
- 7. GROWTH AND CELL DIVISION
- 8. GROWTH AND CELL DIVISION
- 12. ZOOSPORE FORMATION Formed singly within Zoosporangium Zoospore uninucleate and multiflagellate with a ring of flagella at the base of hyaline region
- 14. APLANOSPORE FORMATION Formed singly or more than one within Aplanosporangium Non motile, resistant formed during unfavourable conditions
- 15. SEXUAL REPRODUCTION Advanced Oogamous type Male sex organs called Antheridia Female sex organ called Oogaonium
- 16. SEXUAL REPRODUCTION On the basis of distribution of sex organs, the genus is divided into two groups Macrandrous species Nanandrous species
- 17. MACRANDROUS VS NANANDROUS SPECIES Antheridia borne on the filament of normal size Macrandrous Monoecious - If oogonia and antheridia borne on the same filament Macrandous Dioecious- if borne on different filaments Antheridia – rows of 20-40 Each antheridium contains two antherozoids Antheridia borne on dwarf male filament called Nanandrium Always dioecious Produce Androsporangia instead of antheridia either on the sme filament or on different filaments Likewise we have Gynandrosporous Idioandrosporous Androspores borne singly and slightly larger than antherozoids
- 18. MACRANDROUS VS NANANDROUS SPECIES Antherozoids uninucleate, multiflagellate structures Smaller than zoospores Oogonia bear single egg with hyaline receptive spot Fertilization Zygote formation Meiosis Zoomeiospores Androspores germinate on the female filament to form dwarf male or Nanandrium Bears antheridia Release of antherozoids Fertilization Zygote formation Meiosis Zoomeiospores
- 29. Thanks