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Microbes In Human Welfare

Question
CBSEENBI12002477
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Nitrifying bacteria

  • convert free nitrogen to nitrogen compounds

  • convert proteins into ammonia

  • reduce nitrates to free nitrogen 

  • oxidise ammonia to nitrates

Solution

D.

oxidise ammonia to nitrates

The outermost cell layer of the endosperm (3n) of seed is called aleurone layer. Since the cells of aleurone layer are triploid, the number of chromosomes would be = 63, as root tip cells (2n) has 42 chromosomes.

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