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प्रश्न
Following are the diagrams of entry of pollen tube into ovule. Identify the type A and B.
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उत्तर
- A - Chalazogamy
- B - Mesogamy
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संबंधित प्रश्न
Identify the process represented in the following diagram.
Which of the following induces pollen germination and tube growth in vitro?
After a successful germination, the tip of the pollen tube enters in one of the______ and then ruptures to release the contents.
Identify the INCORRECT statement from the following.
i. The compatible pollen absorbs water and nutrients from the surface of stigma, germinates and produces pollen tube.
ii. The pistil has the ability to recognise and accept the right or compatible pollen of the same species.
iii. Pollination always guarantee the transfer of right type of pollen grain on stigma.
The compatibility and incompatibility of the pollen-pistil interaction is determined by ______.
Which of the following is NOT a natural agent that brings pollen grains to the receptive stigma?
Which layer of the pollen grain grows out through the germ pore to form the pollen tube?
When pollen is shed in the two-celled condition, where do the two male gametes form?
What happens when the pollen tube tip enlarges and ruptures inside the embryo sac?
Which factor promotes pollen tube growth by providing energy and preventing osmotic damage?
