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Question
In the figure given below label the following parts: male gametes, egg cell, polar nuclei, synergid and pollen tube
Solution
The following are the parts of this figure
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RELATED QUESTIONS
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.
Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy.
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
(a) Generative nucleus |
(i) Pollen tube |
|
(b) Germ pore |
(ii) Endosperm nucleus |
|
(c) Exine |
(iii) Testa |
|
(d) Secondary nucleus |
(iv) Fertilization |
|
(e) Integument |
(v) Male nuclei |
|
(f) Egg nucleus |
(vi) Rough |
What happens to the following after fertilization?
Calyx
What happens to the following after fertilization?
Stamens
What is the function of the pollen tube? Explain it with the help of a diagram.
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:
What happens to the part labelled '5' during the process?
Expand the following abbreviation IW.
What is a fruit?
Describe the process of double fertilization.
After fertilization the ovule becomes ______.
Male gametes in angiosperms are formed by the division of ______.
Transmitting tissue is found in
In majority of plants pollen is liberated at
What is Mellitophily?
Following diagram represents double fertilization. Identify the INCORRECT label.
______ have the smallest seeds in the plant kingdom.
Double fertilization is a distinctive feature of ______.
Name the part of gynoecium that determines the compatible nature of pollen.
Which is the triploid tissue in a fertilised ovule? How is the triploid condition achieved?
