Biology Questions

Q:

AIDS is caused by the organisms which are

A) bacteria B) fungi
C) viruses (HTLV III) D) ProtoZoa
 
Answer & Explanation Answer: C) viruses (HTLV III)

Explanation:

AIDS: The term means Acquired Immunity Deficiency Synodrome. The virus attacks the T cells of the (white corpuscle type) blood and destroys them.

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4 2613
Q:

Floridian starch is characteristic energy storage material of which algae?

A) Blue green algae B) Brown algae
C) Red algae D) Green algae
 
Answer & Explanation Answer: C) Red algae

Explanation:

The floridian starch is reserve food materials in the red algae or the members of class Rhodophytae. It is a characteristic feature of this group.

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5 2611
Q:

Which would provide the body with the most energy?

A) Breaking a single carbon bond B) Forming bonds between two amino acids
C) Creating bonds to form a carbohydrate D) Breaking the bonds in a monosaccharide
 
Answer & Explanation Answer: D) Breaking the bonds in a monosaccharide

Explanation:
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1 2611
Q:

Arrange the following ina proper sequence.

A. Mutation

B. Reproductive isolation

C. Natural selection

D. Evolution

 

A) D,C,B,A B) C,B,A,D
C) A,C,D,B D) A,B,C,D
 
Answer & Explanation Answer: D) A,B,C,D

Explanation:
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Q:

In which of the following kind of organisms is the phenomenon found where in the female kills the male after copulation __________

A) Drgonfly B) Honey bee
C) Spider D) Pit viper
 
Answer & Explanation Answer: C) Spider

Explanation:
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8 2604
Q:

When is genetic drift a major factor in evolution?

A) When there is male competition B) When there is artificial selection
C) When there is no selective pressure D) When there is disruptiveselection
 
Answer & Explanation Answer: C) When there is no selective pressure

Explanation:

Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.

 

When is genetic drift a major factor in evolution is

* When there is low gene flow.

* When there is no selective pressure.

* When there is a bottleneck.

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5 2594
Q:

Five Kingdom Classification was preposed by _________

A) Linnacus B) George Bentham
C) Ariostotle D) whittaker
 
Answer & Explanation Answer: D) whittaker

Explanation:
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6 2585
Q:

Cortisol is secreted by

A) Thyroid gland B) Pituitary gland
C) Adrenal gland D) Parathyroid gland
 
Answer & Explanation Answer: C) Adrenal gland

Explanation:
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