Biology Questions

Q:

The size of the pupil is controlled by the

A) Retina B) Iris
C) Cornea D) Lens
 
Answer & Explanation Answer: B) Iris

Explanation:

The size of the pupil is controlled by the Iris when light enters the eye.

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Q:

Which tissue makes the plant hard and stiff?

A) Parenchyma B) Sclerenchyma
C) Collenchyma D) Xylem
 
Answer & Explanation Answer: B) Sclerenchyma

Explanation:
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Q:

Example of a single celled organism

A) Algae B) Amaeba
C) Paramaecium D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Single selled organisms are also known as Unicellular organisms in which they have only one cell.

Examples are :: Fungi, Algae, Amaeba, Paramaecium,...

 

Hence, all the above given options are single selled organisms.

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Q:

Which of the following vitamins is synthesized by intestinal bacteria?

A) Vitamin B B) Vitamin A
C) Vitamin D D) Vitamin K
 
Answer & Explanation Answer: D) Vitamin K

Explanation:

Most of the Vitamin K is synthesized by intestinal bacteria in the large intestine.

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Q:

What is the average Life span of RBC?

A) 120 days B) 99 days
C) 101 days D) 111 days
 
Answer & Explanation Answer: A) 120 days

Explanation:

The average Life span of RBC is 120 days.

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Q:

Which two functional groups are always found in amino acids?

A) Carbonyl and amine B) Ketone and amine
C) Amine and carboxyl D) Aldehyde and amine
 
Answer & Explanation Answer: C) Amine and carboxyl

Explanation:

The two functional groups Amine and carboxyl groups are always found in amino acids.

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Q:

Unlike eutherians, both monotremes and marsupials

A) have some embryonic development outside the uterus B) are found in Australia
C) lay eggs D) lack nipples
 
Answer & Explanation Answer: A) have some embryonic development outside the uterus

Explanation:
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Q:

The scientific name of human being is?

A) Homo Nigrum B) Melongena Sapiens
C) Homo Sapiens D) Tigris Solanum
 
Answer & Explanation Answer: B) Melongena Sapiens

Explanation:
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