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 Biology Questions

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Q:

Water pollution of a river is measured by_______

A) Amount of chlorine dissolve in water B) Amount of Ozone dissolve in water
C) Amount of nitrogen dissolve in water D) Amount of oxygen dissolve in water
 
Answer & Explanation Answer: D) Amount of oxygen dissolve in water

Explanation:
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Q:

Nitrogen fixing bacteria is useful in growing which crop ________

A) Wheat B) Paddy
C) Legume D) Maiz
 
Answer & Explanation Answer: C) Legume

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Q:

The best eradication method for a major infestation is

A) Chemical B) Bacteria
C) Fusion D) None of the above
 
Answer & Explanation Answer: A) Chemical

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Q:

Phycology is the branch of botany in which we study about

A) Algae B) Fungi
C) Ecology D) Virus
 
Answer & Explanation Answer: A) Algae

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27 6904
Q:

Poison glands of snakes are homologous to

A) sebaceous glands of mammals B) salivary glands of vertebrates
C) stings of rays D) electric organs of fishes
 
Answer & Explanation Answer: B) salivary glands of vertebrates

Explanation:

Here Homologous Means having the same relation or relative position or structure. 

Here in snakes poison is in glands and here salivary glands are in Vertebrates.

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Q:

Blood is

A) alkaline B) neutral
C) like a buffer D) acidic
 
Answer & Explanation Answer: A) alkaline

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39 6679
Q:

The inner most membrane that covers the brain is

A) Pleura B) Duramater
C) Pia - mater D) Arachnoid membrane
 
Answer & Explanation Answer: C) Pia - mater

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Q:

Nitrogenous bases in DNA and RNA?

A) Adenine B) Cytosine
C) Guanine D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Nitrogenous base: A molecule that contains nitrogen and has the chemical properties of a base.

 

DNA and RNA ::

 

The nitrogenous bases in DNA are

Adenine (A),

Guanine (G),

Thymine (T), and

Cytosine (C).

 

Whereas the nitrogenous bases in RNA are the same, with one exception:

Adenine (A),

Guanine (G),

Uracil (U), and

Cytosine (C).

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