Biology Questions

Q:

During rainy season wooden doors are difficult to open or closure because of  ?

A) Imbibition B) Plasmolysis
C) Diffusion D) Osmosis
 
Answer & Explanation Answer: A) Imbibition

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Q:

Some species of which of the below kinds of organisms are employed as biopesticides?

1.Bacteria          2. Fungi       3. Flowering plants

A) 1 only B) 2 and 3 only
C) 1 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: A) 1 only

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Q:

The total number of pairs of Peripheral nerves in man are

A) 41 B) 42
C) 43 D) 44
 
Answer & Explanation Answer: C) 43

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Q:

Total salt content in blood is about

A) 1.85 to 1.9% B) 11.85 to 11.9%
C) 2.85 to 2.9% D) 0.85 to 0.9%
 
Answer & Explanation Answer: D) 0.85 to 0.9%

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Q:

Silviculture is the branch of botany in which we study about

A) Culture of algae B) Development of forest
C) Culture of fungi D) Silciphida plant
 
Answer & Explanation Answer: B) Development of forest

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Q:

Which part of Nervous system controls involuntary actions

A) Medulla oblongata B) Cerebellum
C) Hypothalamus D) Spinal cord
 
Answer & Explanation Answer: A) Medulla oblongata

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Q:

From the following pairs, find the one which is correctly matched?

 

A) Scurvy- Thiamine B) Tuberculosis- ATS
C) Tetanus- BCG D) Malaria- Chloroquine
 
Answer & Explanation Answer: D) Malaria- Chloroquine

Explanation:

Chloroquine is a medication used to prevent and to treat malaria.

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Q:

The rate of heartbeat is accelerated by the hormone 

A) adrenaline B) acetylcholine
C) thyroxine D) pituitrin
 
Answer & Explanation Answer: A) adrenaline

Explanation:

The hormone adrenaline also called epinephrine is known as a stress hormone. In emotional upsets( like fear, anger etc.) this hormone is poured into the blood and it accelerates heart beat. The hormone acetylcholine decelerates heartbeat rate.

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