Q.

Both A and B are double membrane bound cell organelles but A has the machinery of protein synthesis and  ‘B’ lacks it. Then A and B cell organelles respectively are

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a

Chloroplasts and mitochondria

b

Chloroplasts and nucleus

c

Nucleus and RER

d

Mitochondrion and lysosomes

answer is C.

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Detailed Solution

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Chloroplasts has 70S ribosomes which helps in protein synthesis. 

In nucleus active ribosomes are absent but nucleolus is the site for active rRNA synthesis.

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