CBSE Class 10 Answered
1. Define :
a) Life processes b) Respiration c) Nutrition d) Photosynthesis e) Heterotrophic nutrition f) Parasitic Nutrition g) Symbiotic nutrition h) Holozoic nutrition
2. Why is diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans?
3. What are enzymes and its functions?
4. What is Glycogen ? Where it is found?
5. Write the balanced equation of photosynthesis.
6. Write the events take place during photosynthesis.
7. How desert plants utilize CO2 during photosynthesis?
8. What are the functions of stomata?
9. How opening and closing of stomata is regulated?
10. In what way Nitrogen is used in living organisms
Asked by rahmanfarseen | 02 Apr, 2018, 05:54: PM
Expert Answer
6. Events in photosynthesis:
- Absorption of sunlight energy by chlorophyll.
- Conversion of light energy into chemical energy, and splitting of water into hydrogen and oxygen using light energy.
- Reduction of carbon dioxide by hydrogen to form carbohydrate like glucose by utilizing the chemical energy.
9. Opening and closing of stomata:
The opening and closing of stomata are controlled by the guard cells. When water flows into the guard cells, they swell up and the curved surface causes the stomata to open. When the guard cells loses water, they shrink and become flaccid and straight thus closing the stomata.
(Note: In case of multiple questions within a query, please post each question individually.)
Answered by Sheetal Kolte | 02 Apr, 2018, 06:17: PM
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