1. Light energy is converted into chemical energy by the process of   Photosynthesis   Symbiosis   Photokinesis   Photoperiodism   Hint Half-n-half Clue   2. Interaction between organisms of different species so as to get benefit from each other is known as   Predation   Symbiosis   Saprophytism   Etiolation   Half-n-half Clue   3. The response of plants to light is known as   Chemotropism   Thigmotropism   Hydrotropism   Phototropism   Half-n-half Clue   4. Which is a by-product of photosynthesis ?   Oxygen   Carbon dioxide   ATP   Nitrogen   Half-n-half Clue   5. Movement of organisms away from the sunlight is known as _______.   Negative phototaxis   Positive phototaxis   Autotrophism   Photoperiodism   Half-n-half Clue   6. From the bark of which tree is quinine obtained?   Redwood   Bunyan   Eucalyptus   Cinchona   Half-n-half Clue   7. Plants manufacture their food by the process of   Photosynthesis   Photokinesis   Symbiosis   Chemosynthesis   Half-n-half Clue