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What is double fertilisation?...

What is double fertilisation?

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(a) Draw the longitudinal section of a flower showing growth of pollen tube upto the embryo sac.Label the following parts : (i) Stigma (ii) Pollen tube (iii) Integument (iv) Chalazal end (v) Nucelllus (vi) Synergids (b) What is double fertilisation in Angiosperms? Why is it so called ?

Why is the process of fertilisation in a flowering plant referred to as double fertilisation? Explain.

(a) Why is fertilisation in an angiosperm referred to as double fertilisation? Mention the ploidy of the cell involved. (b) Draw a neat labelled sketch of L.S. or an endospermous monocot seed.

What is the significance of double fertilisation?

Which one of the following events takes place after double fertilisation ?

Differentiate the following: Fertilisation and double fertilisation

Endosperm, a product of double fertilisation in angiosperm is absent in the seeds of

Endosperm, a product of double fertilisation in angiosperm is absent in the seeds of

The total number of nuclei involved in double fertilisation in angiosperms are

Give scientific terms for the following: A food-laden tissue differentiated inside the embryo sac after double fertilisation from the primary endosperm nucleus.