Biology Questions

Q:

Some roots, called _________________, arise from an organ other than the radicle.

A) tap roots B) stilt roots
C) fibrous roots D) adventitious roots
 
Answer & Explanation Answer: D) adventitious roots

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Q:

Why do the desert plants take up the carbon dioxide for photosynthesis at night?

A) To prevent water loss B) To enhance carbon absorption
C) To release excess oxygen D) No option is correct
 
Answer & Explanation Answer: A) To prevent water loss

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Q:

___________ being a higher category, is the assemblage of families which exhibit a few similar characters.

A) Order B) Species
C) Genus D) Class
 
Answer & Explanation Answer: A) Order

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Q:

When a Cuttlefish is described as a Molluscs, it is at which level of classification?

A) Class B) Order
C) Family D) Phylum
 
Answer & Explanation Answer: D) Phylum

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Q:

Leptospirosis is a disease caused by

A) Virus B) Fungus
C) Protozoa D) None
 
Answer & Explanation Answer: D) None

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Q:

The body of all complex animals consist of only _______ basic types of tissue(s).

A) 4000 B) 400
C) 40 D) 4
 
Answer & Explanation Answer: D) 4

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Q:

Polyploidy arises due to change in the

A) number of chromatids B) structure of genes
C) number of chromosomes D) structure of chromosomes
 
Answer & Explanation Answer: C) number of chromosomes

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Q:

What is the main purpose of white blood corpuscles?

A) to carry nutrients B) to combat infection
C) to carry oxygen D) to give strength
 
Answer & Explanation Answer: B) to combat infection

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