(d) E
Ans: (b)
91. The diseases that are caused by lack of vitamins are called
(a) deficiency diseases
(b) communicable diseases
(c) epidemics
(d) tropical diseases
Ans: (a)
92. "Kwashiorkor" is caused by deficiency of
(a) carbohydrates
(b) proteins
(c) fats
(d) vitamins
Ans: (b)
93. Synthesis of nutrients by green plants is called
(a) photo-oxidation
(b) photo-respiration
(c) photo-synthesis
(d) photo-periodism
Ans: (c)
94. The insects do not have blood pigments because
(a) there is no blood
(b) blood does not have a respiratory function
(c) tissues have pigments
(d) pigments are elsewhere
Ans: (b)
95. The metallic part of haemoglobin is
(a) copper
(b) molybdenum
(c) nickel
(d) iron
Ans: (d)
96. The specific gravity of blood is
(a) lower than water
(b) higher than water
(c) same as water
(d) many times that of water
Ans: (b)
97. Blood is
(a) acidic
(b) alkaline
(c) neutral
(d) like a buffer
Ans: (b)
98. The white blood corpuscles the body" because they are popularly called "soldiers of
(a) march at a regular pace
(b) appear uniform
(c) defend the body
(d) are disciplined
Ans: (c)
99. Loss of blood is minimized due to blood
(a) clotting
(b) receding
(c) healing
(d) drying up
Ans: (a)
100. The disease in which blood clotting does not take place is known as
(a) xerophthalmia
(b) haemopoiesis
(c) haemophilia
(d) haemoerythrin
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