3. What is the name of yellow powdery substance present in the anther of a flower?
4. What is fertilisation?
B. Science qui
Name the male reproductive organ of the plant.
2. Name the female reproductive organ of the plant.
3. Name the main agents for dispersal of seeds and fruits.
4. Name two plants whose seeds are dispersed by the explosion of their fruits.
Worksheet
A Tick() the correct options:
1. Bryophyllum reproduces by its
(a) stem
(b) leaves
(c) roots
(d) flowers
3. Asexual reproduction takes place through spore formation in
(a) Spirogyra (b)yeast
(c) Hydra
(d) bread mould
3. The anther contains
(a) ovary
(b) ovule O (c) pistil 0 (
(d) pollen grains
4. Ripened ovary is known as
(a) fruit
() flower
(c) embryo
(d) seed
3. Fill in the blanks:
1. In
reproduction, new plants are obtained from a single parent.
2. Sporangium is found at the top of erect hypha called
3. Seeds of drumstick plantare dispersed by
4. The ovule after fertilisation grows to become a
O
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O
Answers
Answer:
1. ans
pollen
That yellow powder is called pollen, and the stick that holds it is called a stamen. Flowers reproduce when bees or other pollinators carry pollen between flowers.
2. ans
Fertilisation or fertilization, also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development.
3. ans--- Stamens
4.ans---- pistil
5. ans
Wind, water and animals are the agents of seed and fruit dispersal.
6. ans
Two plants whose seeds are disapeared by explosion of fruits are: rubber and balsam. Rubber and balsam are the 2 plants.
7. ans---- Leaves.
8. ans---- Yeast
9. ans----
pollen grains
The anther contains pollen grains. The part of the stamen where pollen is produced.
10. ans---- Fruit.
11. ans---- Sexual reproduction Asexual reproduction
12. ans---- Sporangia.
13. ans---- anemochory.
14. ans---- seed.
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