Q1 of 30 Page 1

How many megaspore mother cells will produce 24 embryo sacs?

A single megaspore mother cell forms one embryo sac having a 7 celled and 8 nucleated structure.

So 24 embryo sacs are formed by 24 megaspore mother cells.


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2

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Give any example where human actions have resulted in organic evolution.

 4

Name the molecules that form the backbone of the polynucleotide chains of DNA.

 5

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