Question

NUTRITION
1. Why viruses are considered living?
2. "Sunlight is necessary for photosynthesis”. Prove this by experiment.
3. List the ever s that occur during the process of photosynthesis.
4. An experiment was performed to demonstrate that chlorophyll is essential for
photosynthesis.
5. Give reason: solar energy is available in plenty but animals cannot use it directly
whereas the lants can.
6. Leaves of a healthy potted plant were coated with Vaseline to block the stomata. Will
this plant rei iain healthy for long? State reasons for your answer.
7. List out the minerals that are required by plants?
8. Why do plan s require N2?
9. Draw and describe the structure and function of stomata?
10. What are the adaptations of leaf for photosynthesis? Write three adaptations.​

Answer 1

1. What does it mean to be 'alive'? At a basic level, viruses are proteins and genetic material that survive and replicate within their environment, inside another life form. In the absence of their host, viruses are unable to replicate and many are unable to survive for long in the extracellular environment.

7. minerals required by plants are nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur; these are often called the macronutrients.

Answer 2

Answer:

ans 1...At a basic level, viruses are proteins and genetic material that survive and replicate within their environment, inside another life form. In the absence of their host, viruses are unable to replicate and many are unable to survive for long in the extracellular environment