Practice MCQ Questions and answers on Biology-GK

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26.
Placenta is the structure formed

A. by the union of foetal and uterine tissue

B. by foetus only

C. by fusion of germ layers

D. None of these

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27.
Plants hormone that induces cell division is

A. auxins

B. gibberellins

C. cytokinins

D. domins

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28.
Neurospora is used as genetic material because

A. it has short life cycle of 10 days

B. the product of single meiosis can be easily analysed

C. meiotic products are linearly arranged in the form of ordered tetrads

D. is a diploid fungus

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29.
Phloem is a tissue found in

A. reproductive organs of animals

B. plants

C. insects

D. mammals

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30.
N₂ content is kept constant in the biosphere due to

A. N₂ fixation

B. industrial pollution

C. nitrogen cycle

D. absorption of N₂

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Practice MCQ Questions and answers on Biology-GK

26. Placenta is the structure formed

Answer & Solution

27. Plants hormone that induces cell division is

Answer & Solution

28. Neurospora is used as genetic material because

Answer & Solution

29. Phloem is a tissue found in

Answer & Solution

30. N2 content is kept constant in the biosphere due to

Answer & Solution

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26.
Placenta is the structure formed

27.
Plants hormone that induces cell division is

28.
Neurospora is used as genetic material because

29.
Phloem is a tissue found in

30.
N₂ content is kept constant in the biosphere due to