1. Which organism is helpful in making the soil fertile ?   Ringworm   Beetle   Earthworm   Roundworm   Hint Half-n-half Clue   2. Which is not a 'renewable' resource of energy ?   Sun   Petroleum   Water   Wind   Half-n-half Clue   3. Interaction between organisms of different species so as to get benefit from each other is known as   Etiolation   Symbiosis   Predation   Saprophytism   Half-n-half Clue   4. Which is not a scavenger ?   Hyaena   Vulture   Crow   Camel   Half-n-half Clue   5. Mammals are homeothermic animals.   True   False   6. What is quinine used for ?   Curing Typhoid   Curing Aids   Removing pimples   Curing Malaria   Half-n-half Clue   7. Which is a by-product of photosynthesis ?   Carbon dioxide   Nitrogen   Oxygen   ATP   Half-n-half Clue