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Autotrophic organisms 1. Depend on other organisms for food 2. Hunt for the food 3. Synthesize their own food 4. Can not synthesize their food

Photosynthetic activity in green plants has to be tested : 1. early in the morning 2. after keeping the plant in dark for 5-6 hours 3. after exposing the plant to light for 2-3 hours 4. in a day any time

Iodine can be used to test the presence of : 1. glucose 2. light 3. starch 4. carbon dioxide

Which of the following is released during photosynthesis? 1. oxygen 2. carbon dioxide 3. light 4. energy