Question

Life Processes-PlantNutrition
1. What are the raw materials for photosynthesis?

2. Give the energy transformation that takes place in the process of photosynthesis.

3. Summarise the process of photosynthesis with the help of a chemical equation showing the reactants and products.

4. What are the differences between autotrophic nutrition and heterotrophic nutrition?

5. Mention the sequence of events that take place during photosynthesis.

6. What are biological catalyst?

7. All plants give out oxygen during day and carbondioxide during night.Justify this statement.

8. In what form is internal energy reserve (unused energy) stored in plants and animals?

9. Observe the diagram of stomata given below and answer the questions that follows:


a. Where are stomata present in the leaf?

b. In diagram ‘A’, one area has been marked with a question mark '?' Name this area.

c. The area mentioned in question -‘b’ is not been shown diagram ‘B’. What could be the reason for this?

d. The guard cells in diagram ‘A’ are different in shape and size from the guard cells in diagram ‘B’. Which of the following sentences gives the correct reason:

e. What will happen if there are no stomata in a plant?

i) Guard cells swell up during the day and shrink at night

ii) Guard cells swell when water flows into them causing the stomatal pore to open. They shrink when water moves out and the stomatal pore closes. to open and
close at regular intervals.

Answer 1

oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo my god

Answer 2

Q 1 The raw materials for Photosynthesis are as follows

• Sunlight
• Water
• Mineral
• Chlorophyll