1. _______ is made from bamboo plants.   Silk   Jute   Rubber   Paper   Hint Half-n-half Clue   2. Which is a by-product of photosynthesis ?   Oxygen   Carbon dioxide   Nitrogen   ATP   Half-n-half Clue   3. What is the name given to the green pigment in plants ?   Stomata   Starch   Chlorophyll   Tendrils   Half-n-half Clue   4. Saprophytes derive their food from dead organisms.   False   True   5. Silk fibre is produced by certain insects.   True   False   6. Which is not a 'biotic part' of the ecosystem ?   Water   Bacteria   Plants   Insects   Half-n-half Clue   7. Movement of organisms away from the sunlight is known as _______.   Negative phototaxis   Autotrophism   Positive phototaxis   Photoperiodism   Half-n-half Clue