Photosynthesis
Photosynthesis: Overview
This topic explains the process by which plants make their own food and also briefs on stomata, chlorophyll and the role of sun in the process of photosynthesis. It also highlights the synthesis of carbohydrates by plants.
Important Questions on Photosynthesis
Explain the importance of carbon dioxide in the atmosphere.
Which of the following reactions are related to anaerobic respiration?
While conducting an experiment on photosynthesis, Sajeesh pasted a black paper on a leaf of a plant in his courtyard as seen in the picture. What would have prompted him to do so?
Is photosynthesis possible at night? Why?
Do plants release oxygen at all times?
How do plants get carbon dioxide?
Complete the boxes given below:
Plants provide food for us but where do they get their food from?
_____ are the sites of photosynthesis. (mitochondria/chloroplasts)
Name the three major groups of food.
All things are essential for photosynthesis to occur except
Does photosynthesis take place in the other green parts of the plant than leaves?
How does photosynthesis take place in plants with colored leaves?
During photosynthesis solar energy is converted into chemical energy.
Match the following.
| Column A | Column B |
| 1. Chloroplast | a. Site of respiration |
| 2. Mitochondria | b. Heat trapped by carbon dioxide |
| 3. Stomata | c. Occurs without oxygen |
| 4. Starch | d. Openings on the leaves |
| 5. Guard cells | e. Piles of thylakoids |
| 6. Anaerobic respiration | f. Site of photosynthesis |
| 7. Grana | g. Turns blue-black when iodine solution is added |
| 8. Greenhouse effect | h. Open and close a stoma |
Place variegated garden croton in sunlight for a day. Test one of its leaves with an iodine solution. Explain what happens.
How would you prove that light is essential for photosynthesis?
What is the significance of photosynthesis?
