1250+ Interesting Biology Questions Answers MCQ

Q:

In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?

A) 2:2	B) 1:3
C) 3:1	D) 4:0

Answer & Explanation Answer: B) 1:3

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Q:

Which of the following serves as a nutritive tissue for the growing embryo?

A) Ovule	B) Zygote
C) Ovary	D) Endosperm

Answer & Explanation Answer: D) Endosperm

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Q:

Which of the following micro-organism causes diseases like polio and chicken pox?

A) Bacteria	B) Protozoa
C) Algae	D) Virus

Answer & Explanation Answer: D) Virus

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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:

What produces the striations of a skeletal muscle cell?

Answer

The striations are a result of the A bands of sarcomeres appearing as relatively wide, dark stripes under the microscope, which alternate with narrower, lighter colored stripes formed by the I bands.

The striations of skeletal muscle are created by the organization of actin and myosin filaments resulting in the banding pattern of myofibrils.

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Q:

Which of the following is responsible for transport of food and other substances in plants?

A) Xylem	B) Phloem
C) Chloroplast	D) None of these

Answer & Explanation Answer: B) Phloem

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Q:

Which of the following is the largest known cell?

A) Eukaryotic Cell	B) Prokaryotic Cell
C) Mycoplasma	D) Ostrich Eggs

Answer & Explanation Answer: D) Ostrich Eggs

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Q:

Xylem helps in transportation of which of the following?

A) Food	B) Water
C) Nutrients	D) Both food and water

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