GK Biology Questions and Answers
General Knowledge Biology Questions with Answers test knowledge of plants, animals, and human biology. Commonly seen in SSC, UPSC, and NDA exams, they help candidates strengthen concepts of life sciences
GK Biology
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77 questions
31. Prothrombin which helps in clotting of blood is released by
- lymphocytes
- erythrocytes
- monocytes
- blood platelets
33. Most of the red, blue and purple colours of plants are due to a pigment called
- anthocyanin
- carotene
- chlorophyll
- xanthophylls
34. Plants developing in dry conditions are
- xerophytes
- mesophytes
- lithophytes
- hydrophytes
35. Plants growing on sand are called as
- chasmophytes
- oxylophytes
- lithophytes
- psammophytes
36. Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called
- flavoxanthin
- melanin
- carotene
- xanthopny II
37. Ramapithecus and Cro-Magnon man are considered
- ancestors of modern man
- ancestors of monkey
- ancestors of lion
- None of the above
38. Normal adult human male has
- 10 gram of haemoglobin/100 gram of blood
- 14 gram of haemoglobin/100 gram of blood
- 18 gram of haemoglobin/100 gram of blood
- 24 gram of haemoglobin/100 gram of blood
39. Plants wilt due to excess of
- transpiration
- photosynthesis
- absorption
- None of these
40. Monotremes are unique mammals because they
- posses hair
- give birth to live young
- secret milk in a pouch
- lay eggs