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Q.

The number of chromosomes in the pollen grain of plant ‘A’ and egg cell of plant ‘B’ put together is equal to the number in the zygote nucleus of maize.  Identify plant ‘A’ and plant ‘B’ is

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a

Rice and Onion

b

Potato and Onion

c

Apple and Rice

d

Rice and Potato

answer is A.

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Detailed Solution

(A) : Rice 2n = 24, n = 12 and (B) : Onion 2n = 16, n = 8

12+8=20

In maize, zygote is 2n = 20

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The number of chromosomes in the pollen grain of plant ‘A’ and egg cell of plant ‘B’ put together is equal to the number in the zygote nucleus of maize.  Identify plant ‘A’ and plant ‘B’ is