GK Biology Questions and Answers

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Q31
Prothrombin which helps in clotting of blood is released by
  • A lymphocytes
  • B erythrocytes
  • C monocytes
  • D blood platelets
Answer: Option D
Q32
Myopia is connected with
  • A ears
  • B eyes
  • C lungs
  • D None of these
Answer: Option B
Q33
Most of the red, blue and purple colours of plants are due to a pigment called
  • A anthocyanin
  • B carotene
  • C chlorophyll
  • D xanthophylls
Answer: Option A
Q34
 Plants developing in dry conditions are
  • A xerophytes
  • B mesophytes
  • C lithophytes
  • D hydrophytes
Answer: Option A
Q35
Plants growing on sand are called as
  • A chasmophytes
  • B oxylophytes
  • C lithophytes
  • D psammophytes
Answer: Option D
Q36
Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called
  • A flavoxanthin
  • B melanin
  • C carotene
  • D xanthopny II
Answer: Option B
Q37
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: Option A
Q38
 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: Option B
Q39
Plants wilt due to excess of
  • A transpiration
  • B photosynthesis
  • C absorption
  • D None of these
Answer: Option A
Q40
Monotremes are unique mammals because they
  • A posses hair
  • B give birth to live young
  • C secret milk in a pouch
  • D lay eggs
Answer: Option D

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