Q. No.Which of the following plants are grown in green house by exploiting a fact that higher CO2 leads more productivity?
a. Tomatoes
b. Papaya
c. Cycas
d. Pomegranate
Water stress may cause which of the following?
a. Closure of stomata
b. Wilting of leaf
c. reducing metabolic activity
d. all of these
Who gave the law of limiting factors and when?
a. Lieman-1906
b. Blackman-1905
c. Lieman-1905
d. Blackman-1906
Light is a limiting factor for plants in shade-
a. as they do not get full sunlight
b. as they do not get at most 10 % of full sunlight
c. as they do not get at least 50 % of full sunlight
d. as they do not get at most 70% full sunlight
Mark the odd one (with respect to internal factors affecting photosynthesis)
1. Amount of chlorophyll
2. Light intensity
3. Mesophyll cells
4. Orientation of leaves
Choose the correct labelling for given figure
1. D-saturation point, E-Maximum photosynthesis.
2. A-achieved at high light intensity.
3. D-10% of total sunlight, E-Compensation point.
4. A-light saturation at 10% of total sunlight.
The rate of photosynthesis is important in determining-
| 1. | Height of the plant | 2. | Girth of the plant |
| 3. | Yield of the plant | 4. | Growth of the plant |
Consider the following two statements:
| I: | Except for plants in shade or in dense forests, light is rarely a limiting factor in nature for photosynthesis. |
| II: | Light saturation occurs at 50% of the full sunlight. |
1. Both statements are correct and II explains I
2. Both statements are incorrect
3. I is correct and II is incorrect
4. I is incorrect and II is correct
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