This document contains information about plant reproduction, including the structure and function of flower parts, pollination, fertilization, seed dispersal, and seed germination. It includes diagrams labeling flower parts, tables to fill out, descriptions of wind and insect pollination, and questions about the processes. The goal is for students to learn about how plants reproduce sexually through the production and interaction of male and female gametes within flowers.
Grade 8 Science - Unit 4 =, Module 5: Cellular Respiration and Genetics. This presentation is all about the introduction to genetics, and chromosomes formation from DNA. The variety of chromosome numbers from different species are also discussed.
Parts of a Flower
Sepals
Petals
Receptacle
Pistil
Stamen
Stamen
The stamen (plural stamina or stamens) is the pollen-producing reproductive organ of a flower.
Filament- Supports the Anther
Anther- Produces Pollen Grains
Pistil
The ovule producing part of a flower.
The ovary often supports a long style, topped by a stigma. The mature ovary is a fruit, and the mature ovule is a seed. Stigma: The part of the pistil where pollen germinates.
Peduncle
The stalk of a flower.
Types of Flowers
Complete Flowers- have both male and female parts
Incomplete Flowers- have either male or female parts but not both.
Pollination
is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.
How Are Plants Pollinated?
Bees
Birds
Wind
Humans
Animals
How Are Flowers Useful to Us?
Flowers are not just beautiful to look at,
but they also serve a vital role in our ecosystem.
Flowers help our ecosystem flourish and attract a plethora of life to the area and facilitate the expansion of our environment. If flowers are cut down or destroyed before pollination can occur, that particular species has a high chance of dying off in that area. In addition, local wildlife will also vanish in that area since they would have no food. Flowers help keep the ecosystem growing and provide new plant life, as well as help sustain local insects and birds.
References
https://www.google.com/search?q=the+warmth+of+the+sun&biw=1366&bih=624&source=lnms&tbm=isch&sa=X&ved=0ahUKEwijzIvum-vNAhVGE5QKHVPECrQQ_AUICCgD#tbm=isch&q=flower&imgdii=FzbkxijP3tcE6M%3A%3BFzbkxijP3tcE6M%3A%3B9HeLL-NVdsjrxM%3A&imgrc=FzbkxijP3tcE6M%3A
https://www.google.com/search?q=plants+need+to+grow&biw=1366&bih=624&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwiJtPjrnOvNAhXCj5QKHcPEAP0Q_AUIBigB#tbm=isch&q=parts+of+flower+for+kindergarten&imgrc=e6V8oQskJakoiM%3A
https://www.google.com/imgres?imgurl=http%3A%2F%2Fwww.biotik.org%2Flaos%2Fdefs%2FStamen_en.gif&imgrefurl=http%3A%2F%2Fwww.biotik.org%2Flaos%2Fdefs%2F354_en.html&docid=Ds4mwro4x7NUhM&tbnid=QKkshukLyPxM2M%3A&w=455&h=283&noj=1&ved=0ahUKEwiDpou4pOvNAhWGKJQKHR2ZD3kQMwg6KAcwBw&iact=mrc&uact=8&biw=1366&bih=624#h=283&imgdii=QKkshukLyPxM2M%3A%3BQKkshukLyPxM2M%3A%3Bsk-2e39y3k6kCM%3A&w=455
https://www.google.com/search?q=stamen&biw=1366&bih=624&noj=1&source=lnms&sa=X&ved=0ahUKEwiDpou4pOvNAhWGKJQKHR2ZD3kQ_AUIBygA&dpr=1
Grade 8 Science - Unit 4 =, Module 5: Cellular Respiration and Genetics. This presentation is all about the introduction to genetics, and chromosomes formation from DNA. The variety of chromosome numbers from different species are also discussed.
Parts of a Flower
Sepals
Petals
Receptacle
Pistil
Stamen
Stamen
The stamen (plural stamina or stamens) is the pollen-producing reproductive organ of a flower.
Filament- Supports the Anther
Anther- Produces Pollen Grains
Pistil
The ovule producing part of a flower.
The ovary often supports a long style, topped by a stigma. The mature ovary is a fruit, and the mature ovule is a seed. Stigma: The part of the pistil where pollen germinates.
Peduncle
The stalk of a flower.
Types of Flowers
Complete Flowers- have both male and female parts
Incomplete Flowers- have either male or female parts but not both.
Pollination
is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.
How Are Plants Pollinated?
Bees
Birds
Wind
Humans
Animals
How Are Flowers Useful to Us?
Flowers are not just beautiful to look at,
but they also serve a vital role in our ecosystem.
Flowers help our ecosystem flourish and attract a plethora of life to the area and facilitate the expansion of our environment. If flowers are cut down or destroyed before pollination can occur, that particular species has a high chance of dying off in that area. In addition, local wildlife will also vanish in that area since they would have no food. Flowers help keep the ecosystem growing and provide new plant life, as well as help sustain local insects and birds.
References
https://www.google.com/search?q=the+warmth+of+the+sun&biw=1366&bih=624&source=lnms&tbm=isch&sa=X&ved=0ahUKEwijzIvum-vNAhVGE5QKHVPECrQQ_AUICCgD#tbm=isch&q=flower&imgdii=FzbkxijP3tcE6M%3A%3BFzbkxijP3tcE6M%3A%3B9HeLL-NVdsjrxM%3A&imgrc=FzbkxijP3tcE6M%3A
https://www.google.com/search?q=plants+need+to+grow&biw=1366&bih=624&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwiJtPjrnOvNAhXCj5QKHcPEAP0Q_AUIBigB#tbm=isch&q=parts+of+flower+for+kindergarten&imgrc=e6V8oQskJakoiM%3A
https://www.google.com/imgres?imgurl=http%3A%2F%2Fwww.biotik.org%2Flaos%2Fdefs%2FStamen_en.gif&imgrefurl=http%3A%2F%2Fwww.biotik.org%2Flaos%2Fdefs%2F354_en.html&docid=Ds4mwro4x7NUhM&tbnid=QKkshukLyPxM2M%3A&w=455&h=283&noj=1&ved=0ahUKEwiDpou4pOvNAhWGKJQKHR2ZD3kQMwg6KAcwBw&iact=mrc&uact=8&biw=1366&bih=624#h=283&imgdii=QKkshukLyPxM2M%3A%3BQKkshukLyPxM2M%3A%3Bsk-2e39y3k6kCM%3A&w=455
https://www.google.com/search?q=stamen&biw=1366&bih=624&noj=1&source=lnms&sa=X&ved=0ahUKEwiDpou4pOvNAhWGKJQKHR2ZD3kQ_AUIBygA&dpr=1
This is a simple worksheet for drawing and outlining the stages of mitosis. There are 4 boxes for Prophase, Metaphase, Anaphase, and Telophase with 1 extra box for either interphase or cytokinesis.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Ethnobotany and Ethnopharmacology:
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New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
1.4 modern child centered education - mahatma gandhi-2.pptx
Plant reproduction worksheet
1. Name:____________________________________________________
Structure of a flower
Label the diagram below:
Complete the word fill exercise below and table on the next sheet:
The male part of the flower is called the _______________consists of the
____________ and ____________ . The female part of the flower is called
the _____________ consists of the ______________, ______________ and
_______________. The male gamete is made in the ______________ and is
found inside the _____________ grain. The female gamete is found in the
_____________ and is called an ______________.
Biology IGCSE: Plant Reproduction 1
3. Name:____________________________________________________
Biology IGCSE: Plant Reproduction 3
Pollination:
What is pollination:
___________________________________________________________
___________________________________________________________
___________________________________________________________
There are two mechanisms for pollination: wind and insect. Flowers are
adapted to suit the mechanism by which they are pollinated.
Identify which flower illustrated below is wind-pollinated and which is insect-pollinated:
________________ ________________
Name three flowers that are insect-pollinated:
_____________________________________________________________________
Give an example of a type of plant that is wind-pollinated:
_____________________________________________________________________
4. Name:____________________________________________________
Complete the table below by describing how each part of the flower is
adapted for wind or insect-pollination:
Flower part
Insect-pollinated
Wind-pollinated
Biology IGCSE: Plant Reproduction 4
Petals
Nectary
Scent
Stigma
Stamen
Explain the difference between self-pollination and cross-pollination:
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
5. Name:____________________________________________________
Why is it preferable for a plant to encourage cross-pollination rather than self-pollination?
_____________________________________________________________________
_____________________________________________________________________
Explain the methods used by plants to encourage cross-pollination (you can
refer to the diagrams in the previous page and below in your answer).
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
Biology IGCSE: Plant Reproduction 5
6. Name:____________________________________________________
Biology IGCSE: Plant Reproduction 6
Fertilisation
What stimulates the pollen tube to grow? ________________________
___________________________________________________________
Why do pollen grains only produce tubes in flowers of their own species?
___________________________________________________________
Explain how the pollen tube grows down through the style:___________
___________________________________________________________
How does the male gamete in flowers differ to the animal male gamete?
___________________________________________________________
When does fertilisation occur?__________________________________
___________________________________________________________
What type of division occurs to produce an embryo plant from the diploid
zygote formed after fertilisation?
___________________________________________________________
7. Name:____________________________________________________
Biology IGCSE: Plant Reproduction 7
Seed dispersal
What part of the flower develops into a seed?
___________________________________________________________
How does the seed become dormant?
___________________________________________________________
___________________________________________________________
___________________________________________________________
Why do seeds need to be dispersed away from the parent plant?
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
What are the four mechanisms for seed dispersal?
___________________________________________________________
___________________________________________________________
8. Name:____________________________________________________
For each of the seeds shown state its mechanism for seed dispersal and
describe the adaptations that are suited to the mechanism
Name of plant Diagram of seed Seed dispersal
mechanism
Adaptations
Lupin
mechanical Dries unevenly
and splits open
with force
shooting the
seeds outwards
Biology IGCSE: Plant Reproduction 8
Backberry
Burdock
Sycamore
Coconut
Key words to help: animal, water, wind, hooks, wings, hollow, light,
fruit, bright colour, waterproof case
9. Name:____________________________________________________
Biology IGCSE: Plant Reproduction 9
Seed germination
Label the diagram:
What are the:
a) Cotyledons:_______________________________________________
b) Plumule:_________________________________________________
c) Radicle:__________________________________________________
d) Testa:____________________________________________________
e) Micropyle:________________________________________________
Why is it important for water to enter the seed?_____________________
___________________________________________________________
___________________________________________________________
10. Name:____________________________________________________
What is meant by the term dry mass?
___________________________________________________________
___________________________________________________________
Explain why the dry mass changes at points X and Y in the graph below:
Dry mass/g X Y
Days
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
Biology IGCSE: Plant Reproduction 10
11. Name:____________________________________________________
Summarise the experiment results below to explain what conditions are
required for seed germination:
moist dry moist moist moist
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
Biology IGCSE: Plant Reproduction 11
4oC
A
Warm
B
Warm
C
Warm
D
Warm
E
Oxygen
present
Oxygen
present
Oxygen
present
Oxygen
present
No
oxygen
No light
Pyrogallol (absorbs oxygen)
