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Biology MCQ Questions with answers

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Rakesh Yadav • 4.99K Points
Extraordinary

Q) Which of the following minerals is responsible for the occurrence of the anemia?

(A) Iron

(B) Iodine

(D) Potassium

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Correct Answer - Option (A)

Explanation:
The major cause of anemia is iron deficiency. It can occur due to thalassemia (inherited disorders of hemoglobin) also. Anemia is a condition that develops when your blood lacks enough healthy red blood cells or hemoglobin. Iron deficiency is thought to be the most common cause of anemia globally, although other conditions, such as folate, vitamin B12 and vitamin A deficiencies, chronic inflammation, parasitic infections, and inherited disorders can all cause anemia.

Gopal Sharma • 28.64K Points
Instructor II

Q) Most of the red, blue and purple colours of plants are due to a pigment called

(A) anthocyanin

(B) carotene

(D) xanthophylls

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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

Gopal Sharma • 28.64K Points
Instructor II

Q) Plants developing in dry conditions are

(A) xerophytes

(B) mesophytes

(D) hydrophytes

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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

Gopal Sharma • 28.64K Points
Instructor II

Q) Plants growing on sand are called as

(A) chasmophytes

(B) oxylophytes

(D) psammophytes

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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

Gopal Sharma • 28.64K Points
Instructor II

Q) Our skin, when exposed to excess sunlight, becomes dark. This is because of our skin pigments called

(A) flavoxanthin

(B) melanin

(D) Xanthophyll

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Correct Answer - Option (B)

Explanation:
Within the skin's epidermal (outer) layer are cells that contain the pigment melanin. Suntanning occurs because exposure to sunlight causes the skin to produce more melanin and to darken. The tan fades as these cells move toward the surface and are sloughed off.

Gopal Sharma • 28.64K Points
Instructor II

Q) Ramapithecus and Cro-Magnon man are considered

(A) ancestors of modern man

(B) ancestors of monkey

(D) None of the above

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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

Gopal Sharma • 28.64K Points
Instructor II

Q) Normal adult human male has

(A) 10 gram of haemoglobin/100 gram of blood

(B) 14 gram of haemoglobin/100 gram of blood

(D) 24 gram of haemoglobin/100 gram of blood

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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

Gopal Sharma • 28.64K Points
Instructor II

Q) Plants wilt due to excess of

(A) transpiration

(B) photosynthesis

(D) None of these

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Correct Answer - Option (A)

Explanation:
Wilting is a condition when the amount of water lost from the plant during transpiration is greater the amount of water absorbed from the soil. It is the loss of rigidity of non-woody parts of the plants. This occurs when the turgor pressure in non-lignified plant cells falls towards zero, as a result of diminished water in the cells.

Gopal Sharma • 28.64K Points
Instructor II

Q) Monotremes are unique mammals because they

(A) posses hair

(B) give birth to live young

(D) lay eggs

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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

Gopal Sharma • 28.64K Points
Instructor II

Q) Poison glands of snakes are homologous to

(A) electric organs of fishes

(B) stings of rays

(D) salivary glands of vertebrates

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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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