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 Biology Questions

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Q:

Ferns belong to which division of plants?

A) Gymnosperms B) Angiosperms
C) Thallophyta D) Pteridophyta
 
Answer & Explanation Answer: D) Pteridophyta

Explanation:
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Q:

A US team of scientists has found that the mechanism responsible for the ageing process is located --

A) Inside the face B) Inside the skin
C) Inside the brain D) Inside the heart
 
Answer & Explanation Answer: C) Inside the brain

Explanation:
The US team of scientists found the mechanism in the hypothalamus, which is located deep inside the brain and showed that it is responsible for the ageing process.
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Q:

Which of the following organisms does not fit into the Cell Theory?

A) Bacteria B) Virus
C) Fungi D) Plants
 
Answer & Explanation Answer: B) Virus

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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:

The specificity of an antibody is due to

A) the variable portions of the H and L chains B) the L chains
C) its valence D) the H chains
 
Answer & Explanation Answer: A) the variable portions of the H and L chains

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Q:

......... reproduces by binary fission

A) Amoeba B) Liverfiuke
C) Plasmodium D) Planaria
 
Answer & Explanation Answer: A) Amoeba

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Q:

Nephron is related to which of the following system of human body?

A) Circulatory system B) Excretory system
C) Reproductive system D) Respiratory system
 
Answer & Explanation Answer: B) Excretory system

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Q:

Which of the following does not hold true for Animal belonging to Phylum Chordate?

A) Notochord present B) Pharynx perforated by gill slits.
C) Heart is dorsal (if present) D) A post-anal part (tail) is present
 
Answer & Explanation Answer: C) Heart is dorsal (if present)

Explanation:
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