Same chapter3 marksDifficulty: Medium
What is emasculation, and when is it necessary in plant breeding?
Sexual Reproduction in Flowering Plants
3 marksDifficulty: Medium
Describe the structure of a mature embryo sac and name the cells it contains.
Original Khojo Papers practice question — not from a past board paper.
Answer
A mature embryo sac is seven-celled and eight-nucleate. At the micropylar end lie the egg apparatus, made of one egg cell and two synergids; at the chalazal end lie three antipodal cells; and in the centre is a large central cell with two polar nuclei.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The two synergids bear filiform apparatus that guide the pollen tube into the sac.
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