1. Which is not true regarding parasites ?   They live on or inside the other organism.   Leech is a parasite.   They are always beneficial to the other organism.   They derive their food from the organism on which they live.   Hint Half-n-half Clue   2. 'Lac' is a plant product.   True   False   3. Which organism is helpful in making the soil fertile ?   Roundworm   Earthworm   Ringworm   Beetle   Half-n-half Clue   4. In atom bomb explosion, _______ energy is primarily converted into _______ energy.   chemical, atomic   chemical, light   atomic, sound   atomic, heat   Half-n-half Clue   5. Man is an amphibian.   True   False   6. Plants manufacture their food by the process of   Symbiosis   Photokinesis   Chemosynthesis   Photosynthesis   Half-n-half Clue   7. Light energy is converted into chemical energy by the process of   Symbiosis   Photokinesis   Photosynthesis   Photoperiodism   Half-n-half Clue