91. Which of these reactions occur in photosynthesis?
Ans (a) Carbon dioxide is reduced and water is oxidised
92. The maximum volume of air contained in the lung by a full forced inhalation is called:
Ans (b) Vital Capacity
93. Example of naturally vegetative plants as
Ans (a) Potato, Onion, ginger, sugarcane
94. Heart is covered with the covering of:
Ans (a) Peri Cardium
95. Bile juice helps in the digestion of:
Ans (c) Fats
96. Which of the following constitutes a food chain?
Ans (b) Grass, goat, and human
97. As human beings occupy the top level in any food chain, the maximum concentration of insecticides gets accumulated in our bodies. This phenomenon is known as:
Ans (c) biological magnification
98. Which of the following is not a method of contraception?
Ans (b) Abortion
99. The start of the reproductive phase in the human female is:
Ans (b) Menarche
100. A step in cellular respiration that is common to both aerobic and anaerobic organisms is:
Ans (c) Glycolysis
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