biology general knowledge questions

37.

Plants developing in dry conditions are
A.     xerophytes    B.     mesophytes
C.     lithophytes    D.     hydrophytes
Answer & Explanation

Answer: Option A

Explanation:

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38.

Plants growing on sand are called as
A.     chasmophytes    B.     oxylophytes
C.     lithophytes    D.     psammophytes
Answer & Explanation

Answer: Option D

Explanation:

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39.

Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called
A.     flavoxanthin    B.     melanin
C.     carotene    D.     Xanthophyll
Answer & Explanation

Answer: Option B

Explanation:

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40.

Ramapithecus and Cro-Magnon man are considered
A.     ancestors of modern man
B.     ancestors of monkey
C.     ancestors of lion
D.     None of the above
Answer & Explanation

Answer: Option A

Explanation:

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41.

Normal adult human male has
A.     10 gram of haemoglobin/100 gram of blood
B.     14 gram of haemoglobin/100 gram of blood
C.     18 gram of haemoglobin/100 gram of blood
D.     24 gram of haemoglobin/100 gram of blood
Answer & Explanation

Answer: Option B

Explanation:

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42.

Plants wilt due to excess of
A.     transpiration    B.     photosynthesis
C.     absorption    D.     None of these
Answer & Explanation

Answer: Option A

Explanation:

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