Advertisements
Advertisements
प्रश्न
Identify the false statement and rewrite it correctly by changing the first or last word only.
Photosynthesis stops at a temperature of about 35°C.
विकल्प
True
False
Advertisements
उत्तर
This statement is false.
Correct statement: Photosynthesis stops at a temperature of above 40°C.
APPEARS IN
संबंधित प्रश्न
Short answer question.
Which four of the following are needed for photosynthesis in a leaf:
(i) Carbon dioxide:
(ii) Oxygen:
(iii) Nitrates :
(iv) Water:
(v) Chlorophyll:
(vi) Soil:
(vii) Light:
Suppose we compare the leaf with a factory, match the items in Column A with those in Column B.
| Column A | Column B | ||
| Left | Factory | ||
| 1 | Cells in the leaf | a | Raw materials |
| 2 | Chloroplast | b | Power |
| 3 | Sunlight | c | Machinery |
| 4 | Oxygen and water | d | End product |
| 5 | Carbon dioxide and water | e | By product |
| 6 | Glucose | f | Workroom |
State whether the following statement is True or False:
The free oxygen in the atmospheric air is the result of photosynthesis.
Long answer question.
In order to carry out photosynthesis, what are the substances that a plant must take in? Also mention their sources.
Long answer question.
What is the role of chlorophyll in photosynthesis?
Tick the most appropriate answer.
Exhaled air contains
When there is plenty of light and a higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.
Draw and label the structure of oxysomes.
In tropical rain forests, the canopy is thick and plants growing below receive filtered light. How are they able to carry out photosynthesis?
The figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following question:
- At which point/s (A, B or C) in the curve is light a limiting factor?
- What could be the limiting factor/s in Region A?
- What do C and D represent on the curve?
Graph of light intensity on the rate of photosynthesis
