C3 plants show saturation at----- ul/L.

1.	450	2.	360
3.	400	4.	Both a and b

Which of the following plants are grown in green house by exploiting a fact that higher CO2 leads more productivity?

Temperature will affect which process more sensitively?
1. Dark process
2. Non Cyclic Process
3. Cyclic Process
4. Splitting of water

Which plants can tolerate higher temperature?
1. C3
2. C2
3. C4
4. Both

Water stress may reduce availability of which factor?
1. O2
2. Nutrients
3. Light
4. CO2

Water stress may cause which of the following?

Which of the following is not an after-effect of water stress?
1. Reducing CO₂ availability
2. Closure of stomata
3. Reducing metabolic activity
4. Increased surface area

At low light conditions, which plant responds to high CO2 conditions?

What is the major limiting factor for photosynthesis?
1. CO2
2. Water
3. Sunlight
4. Chlorophyll

Light is a limiting factor for plants in shade-