Biology Questions

Q:

Which of the following is responsible for giving colour to human skin?

A) Luciferin B) Haemoglobin
C) Flavonoids D) Melanin
 
Answer & Explanation Answer: D) Melanin

Explanation:
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Q:

Animals in which the cells are arranged in three embryonic layers are called ________.

A) Diploblastic B) Ectoderm
C) Tripoblastic D) Endoderm
 
Answer & Explanation Answer: C) Tripoblastic

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Q:

Most viruses that infect plants possess

A) single-stranded DNA B) single-stranded RNA
C) double-stranded DNA and RNA D) double-stranded RNA only
 
Answer & Explanation Answer: B) single-stranded RNA

Explanation:

Generally viruses that infect plants have single stranded RNA. Viruses infecting animals have double stranded RNA or DNA. Viruses which infect bacteria have double stranded DNA.

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Q:

With which of the following body organ is 'pace-maker' associated?

A) Liver B) Brain
C) Heart D) Lungs
 
Answer & Explanation Answer: B) Brain

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2 1609
Q:

Which is the longest bone in the human body?

A) Fibula B) Radius
C) Stapes D) Femur
 
Answer & Explanation Answer: D) Femur

Explanation:
The femur is also the longest bone in the human body. By most measures the femur is the strongest bone in the body.
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Q:

Bryophytes are also called ____________ of the plant kingdom.

A) Mammals B) Amphibians
C) Reptiles D) Insecta
 
Answer & Explanation Answer: B) Amphibians

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Q:

Which organ produces insulin?

A) Liver B) Thyroid gland
C) Spleen D) Pancreas
 
Answer & Explanation Answer: D) Pancreas

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Q:

The somatosensory receptors in human beings detect ______.

A) taste B) smell
C) touch D) hear
 
Answer & Explanation Answer: C) touch

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