1250+ Interesting Biology Questions Answers MCQ

Q:

Which organ does detoxification and produces chemicals needed for digestion?

A) Salivary glands	B) Pancreas
C) Thyroid gland	D) Liver

Answer & Explanation Answer: D) Liver

Explanation:

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3 1957

Q:

What is the function of chloroplast in a plant cell?

A) absorb nutrients from soil	B) absorb water
C) absorb sunlight	D) All of the above

Answer & Explanation Answer: C) absorb sunlight

Explanation:

Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.

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1 1956

Q:

In a nucleosome, the DNA is wrapped around

A) ribosomes	B) thymine dimer
C) histones	D) polymerase

Answer & Explanation Answer: C) histones

Explanation:

in_a_nucleosome_the_dna_is_wrapped_around1559212136.png image

In a nucleosome, the DNA is wrapped around a protein called histones and area in between them.

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3 1952

Q:

What nitrogenous bases are found in RNA?

A) Thymine	B) Uracil
C) Guanine	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

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3 1943

Q:

The cell wall in plants is interrupted by narrow pores carrying fine stands of cytoplasm which interlink the contents of the cells. These strands are called:-

A) Plasmahole	B) Microvilli
C) Plasmodesmata	D) Plasmalemma

Answer & Explanation Answer: C) Plasmodesmata

Explanation:

Plasmodesmata are interrupted by narrow pores carrying fine strands of cytoplasm, which interlink the contents of the cells.

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2 1943

Q:

What is plant cell wall mainly composed of?

A) Lipids	B) Vitamin
C) Cellulose	D) Protein

Answer & Explanation Answer: A) Lipids

Explanation:

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5 1940

Q:

Potato, tomato and brinjal are three different species but all belong to which genus?

A) Solanum	B) Panthera
C) Felis	D) Tigris

Answer & Explanation Answer: A) Solanum

Explanation:

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1 1939

Q:

In unicellular organisms, all functions like digestion, respiration and reproduction are performed by a how many cell(s)?

A) 1	B) 2
C) 3	D) 4

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