General Knowledge - Biology

Exercise :: Biology - Section 1

  • Biology - Section 1
25. 

O2 released in the process of photosynthesis comes from

A. CO2
B. water
C. sugar
D. pyruvic acid

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

27. 

Plants hormone that induces cell division is

A. auxins
B. gibberellins
C. kinins
D. domins

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

29. 

Phloem is a tissue found in

A. reproductive organs of animals
B. plants
C. insects
D. mammals

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

30. 

N2 content is kept constant in the biosphere due to

A. N2 fixation
B. industrial pollution
C. nitrogen cycle
D. absorption of N2

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.


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