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प्रश्न
'Formation of primary endosperm nucleus is called triple fusion'. Give reason
उत्तर
In angiosperms, one of the two male gametes fuses with the diploid secondary nucleus to form a triploid primary endosperm nucleus. This process is called triple fusion.
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संबंधित प्रश्न
Why do you think the zygote is dormant for sometime in a fertilised ovule?
(a) Explain the events after pollination leading to the formation of a seed in angiosperms.
(b) Mention the ploidy levels of the cells of different parts of an albuminous seed.
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 is the function of the part labelled '4'?
Do you think fruits are important for the plant?
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.
Identify the incorrect pair
In majority of plants pollen is liberated at
Explain the development of a Dicot embryo
Due to which of the following reasons the pollen tube usually grows down towards the egg?
All the events from pollen deposition on the stigma until pollen tubes enter the ovules are together referred to as ______.
