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प्रश्न
What is the significance of the dispersal of seeds? Give any two points.
उत्तर
Significance of dispersal of seeds:
- Evolution of land plants.
- In establishing species in new areas by means of dispersal.
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संबंधित प्रश्न
Why do you think the zygote is dormant for sometime in a fertilised ovule?
Read the following statement and answer the questions that follow :
"A guava fruit has 200 viable seeds."
(a) What are viable seeds?
(b) Write the total number of :
(i) Pollen grains (ii) Gametes
in producing 200 viable guava seeds.
c) Prepare a flow-chart to depict the post-pollination events leading to viable-seed production in a flowering plant.
Differentiate between outbreeding and outcrossing.
Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
What happens to
i) Ovary
ii) Ovule after fertilisation
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
Do you think fruits are important for the plant?
Describe the process of double fertilization.
Assertion: Sporopollenin preserves pollen in fossil deposits
Reason: Sporopollenin is resistant to physical and biological decomposition
Caruncle develops from
Double fertilization is characteristic of ______.
