Biology Questions

Q:

The universal natural auxin of plants is

A) IBA B) Citric auxin
C) NAA D) IAA
 
Answer & Explanation Answer: D) IAA

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Q:

Syngamy is defined as

A) the fission of one egg B) the fusion of one of the sperms with the synergid
C) the fission of one sperm D) the fusion of one of the sperms with the egg
 
Answer & Explanation Answer: D) the fusion of one of the sperms with the egg

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Q:

Which of the following animal is not triploblastic?

A) Earthworm B) Ascaris
C) Jelly fish D) Planaria
 
Answer & Explanation Answer: C) Jelly fish

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Q:

Which of the following is necessary to maintain the number of individuals of species and to prevent their extinction?

A) Digestion B) Circulation
C) Respiration D) Reproduction
 
Answer & Explanation Answer: D) Reproduction

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Q:

___ is a multicellular organism.

A) Mycoplasma B) Paramoecium
C) Agaricus D) Cyanobacteria
 
Answer & Explanation Answer: C) Agaricus

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Q:

Which type of reproduction allows for greater variation to be generated?

A) Sexual reproduction B) Asexual reproduction
C) Binary fission D) Multiple fission
 
Answer & Explanation Answer: A) Sexual reproduction

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Q:

Because of base pairing in DNA, the percentage of

A) thymine molecules in DNA is about equal to the percentage of adenine molecules B) cytosine molecules in DNA is much greater than the percentage of guanine molecules
C) adenine molecules in DNA is about equal to the percentage of guanine molecules D) adenine molecules in DNA is much greater than the percentage of thymine molecules
 
Answer & Explanation Answer: A) thymine molecules in DNA is about equal to the percentage of adenine molecules

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Q:

Slow-growing large coloured patches on the bark of trees are the examples of symbiotic life forms called ______.

 

A) Aphids B) Egrets
C) Shrimps D) Lichens
 
Answer & Explanation Answer: D) Lichens

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