Biology Worksheet With Answers Page 3
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10(c) Rickets (d) Kwashiorkor
Ans. (b)
17. Chemically wax is:
(a) A protein (b) A lipid
(c) A carbohydrate (d) An amino acid
Ans. (b)
18. The chemical formula of chlorophyll-b is:
(a) C55H,2NN5Mg (b) C5H,2O5N4Mg
(c) C55H7006N4 Mg (d) C55H7005N5 Mg
Ans. (c)
19. The reaction of glycolysis occurs in:
(a) mitochondria (b) ribosome
(c) cytoplasm (d) golgi complex
Ans. (c)
20. In a human being the number of cranial nerves are:
(a) 10 pairs (b) 12 palirs
(c) 6 pairs (d) 20 pairs
Ans. (b)
21. The plants respond to photo-periods due to the presence of:
(a) phytochromes (b) stomata
(c) enzymes (d) phytohormones
Ans. (a)
22. The pioneers in the field of organic evolution are:
(a) Darwin, Lamarck, Hugo de Vries, Huxley
(b) Karl Landsteiner, Hugo de Vries, Malthus, Darwin
(c) Lamarck, Karl landsteiner, Malthus, Hungo de Vries
(d) Darwin, Lamarck, Karl Landsteiner, Hugo de Vries
Ans. (a)
23. The celi wall of bacteria is composed of:
(a) murein (b) chitin
(c) cellulose (d) suberin
Ans. (a)
24. The phenomenon, In which an allele of one gene suppresses the activity of an allele of another
gene, is known as:
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