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 Biology Questions

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Q:

In electro - magnetic radiation, which of the following has greater wave - length than visible light

A) Ultra -violet rays B) Infra - red rays
C) Cosmic rays D) x-rays
 
Answer & Explanation Answer: B) Infra - red rays

Explanation:
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Q:

Which best matches the description with the genetic material?

A) Chromosomes are located in the cytoplasm. B) DNA is located in the nucleus.
C) Nucleotides form a helical structure that is called a gene. D) Chromosomes create genes.
 
Answer & Explanation Answer: B) DNA is located in the nucleus.

Explanation:

DNA is the genetic material in the cell. 

 

Hence, option B) DNA is located in the nucleus best matches the description with the genetic material.

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Q:

Which of the following is true about blood plasma?

A) The main protein component is hemoglobin. B) It is a faint yellow fluid.
C) It is the same as serum but without the clotting proteins. D) It is about 90% water.
 
Answer & Explanation Answer: D) It is about 90% water.

Explanation:

The first option is incorrect because it is devoid of blood cell, also red blood cells so doesn’t contains haemoglobin.

The second option is incorrect because plasma is colorless.

The third option is also incorrect because plasma contains the clotting factors.

 

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Q:

Which of the following crops  would be preffered for sowing in order to enrich the soil with nitrogen?

A) Wheat B) Mustard
C) Sunflower D) Gram
 
Answer & Explanation Answer: D) Gram

Explanation:
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Q:

Which organelles in the cell, other than nucleus contains DNA?

A) Centriole B) Goalgi apparatus
C) Lysosomes D) Mitochondria
 
Answer & Explanation Answer: D) Mitochondria

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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Q:

A pulse can be detected most easily in

A) a vein B) a lacteal
C) an artery D) a capillary
 
Answer & Explanation Answer: C) an artery

Explanation:

A pulse can be detected most easily in Arteries as they are under much greater pressure than veins because they are carrying blood away from the heart which is the pumping machine to force blood to move to all of the body.

 

Every time the hear contracts, it can be felt in an artery where a surge of blood has just been forced.

 

A capillary is too small to feel a pulse and a lacteal is part of the lymphatic system found in the small intestine.

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Q:

Enzymes are produced by

A) endocrine glands B) exocrine glands
C) liver D) spleen
 
Answer & Explanation Answer: B) exocrine glands

Explanation:

Glands are of two types. The exocrine glands have ducts to carry their secretions and these secretions contain enzymes. on the other hand, endocrine glands are ductless glands and they secrete mainly horomones.

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