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Question
Size of pollen grain in Myosotis
Options
10 micrometer
20 micrometer
200 micrometer
2000 micrometer
Solution
10 micrometer
RELATED QUESTIONS
Where and how does triple fusion take place?
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.
Explain the events up to double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.
What happens to the following after fertilization?
Ovules
What are the advantages of the following in the flower to the plant concerned?
Smooth and light pollen
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
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Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
What part does the stigma play in the process of fertilisation?
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What is a fruit?
Do you think fruits are important for the plant?
The question has four options. Choose the correct answer:
One male gamete fuses with the egg and forms a diploid zygote. This process is called
Long Answer Question:
Draw a labeled diagram of the L.S. of anatropous ovule and list the components of the embryo sac and mention their fate after fertilization.
Give any four points of significance of double fertilization.
Assertion: Sporopollenin preserves pollen in fossil deposits
Reason: Sporopollenin is resistant to physical and biological decomposition
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Double fertilization is characteristic of ______.
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After fertilization, the seed coat of seeds develops from ______
