respiration in organisms class 7 mcq
18 The top 8 inches of soil of one acre may contain of bacteria and fungi
1. Vi kg
2. 5 Vi tons
3. 1 ton
4. 1 kg
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17 Amoebiasis is caused by
1. algae
2. fungi
3. micro arthopods
4. protozoans
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16 ' Septicemia ' means
1. poisoning of body
2. poisoning of blood
3. poisoning of organs
4. poisoning of brain
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15 Bacteria that is present in the intestine is useful in
1. excretion
2. digestion
3. absorption
4. assimilation
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