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प्रश्न
Give one word/term for the following:
When pollen grains of a flower reach the stigma of the same flower.
उत्तर
Self-pollination/Autogamy
APPEARS IN
संबंधित प्रश्न
'Formation of primary endosperm nucleus is called triple fusion'. Give reason
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 are the advantages of the following in the flower to the plant concerned?
Protruding and easily movable anthers
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
Match the following
| I) | External fertilization | i) | pollen grain |
| II) | Androecium | ii) | anther wall |
|
III) |
Male gametophyte | iii) | algae |
| IV) | Primary parietal layer | iv) | stamens |
Male gametes in angiosperms are formed by the division of ______.
Which of the following represent megagametophyte
Define triple fusion.
Following diagram represents double fertilization. Identify the INCORRECT label.
In the figure given below label the following parts: male gametes, egg cell, polar nuclei, synergid and pollen tube
