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 Biology Questions

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Q:

Amoeba belongs to the phylum

A) Protozoa B) Annelida
C) Porifera D) Platyhelminthes
 
Answer & Explanation Answer: A) Protozoa

Explanation:
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Q:

The support cells of the nervous system are

A) astrocytes B) oligodendrocytes
C) ependymal cells D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The support cells of the nervous system are Glia, also called glial cells or neuroglia. In the central nervous system, there are four types of supporting cells. They are ::

The_support_cells_of_the_nervous_system_are1547786671.jpg image

 

* Astrocytes

* Microglial cells

* Ependymal cells

* Oligodendrocytes

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Q:

What is the functional unit of a skeletal muscle called?

A) Myofibril B) Sarcomere
C) Fiber D) Fasciculus
 
Answer & Explanation Answer: B) Sarcomere

Explanation:

The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, which are the basic functional units of the skeletal muscle.

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Q:

The disease Goitre is caused in persons who do not have in their diet sufficient

A) calcium B) sodium
C) iodine D) iron
 
Answer & Explanation Answer: C) iodine

Explanation:

Goitre is characterized by the swelling of the neck region. This is due to the enlargement of the thyroid gland which secretes hormone thyroxine. Thyroxine has iodine as an integral part of it. If there is not sufficient iodine in one's  diet, the thyroid gland swells up.

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Q:

Food wrapped in news paper is likely to get contaminated by 

A) Magnesium B) Alluminium
C) Lead D) Copper
 
Answer & Explanation Answer: C) Lead

Explanation:

It gets contaminated by lead

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Q:

The book Historia plantrum is written by

A) Aristotle B) Theophrastus
C) Hipporates D) Darwin
 
Answer & Explanation Answer: B) Theophrastus

Explanation:
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Q:

Which structure is common to plant and animal cells?

A) Centriole B) Chloroplast
C) Central Vacuole D) Mitochondria
 
Answer & Explanation Answer: D) Mitochondria

Explanation:

Mitochondria are present in both plant and animal cells.

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Q:

What process never occurs in interphase?

Answer

Absence of cell division is the process that never comes in interphase.

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