5
MCQ (Single Correct Answer)
The process of guttation takes place
A
when the root pressure is high and the rate of transpiration is low.
B
when the root pressure is low and the rate of transpiration is high.
C
when the root pressure equals the rate of transpiration.
D
when the root pressure as well as rate of transpiration are high.
6
MCQ (Single Correct Answer)
Which of the following is an example of imbibition?
A
Uptake of water by root hair
B
Exchange of gases in stomata
C
Swelling of seed when put in soil
D
Opening of stomata
7
MCQ (Single Correct Answer)
When a plant undergoes senescence, the nutrients may be
A
accumulated
B
bound to cell wall
C
translocated
D
None of these
8
MCQ (Single Correct Answer)
Water potential of pure water at standard temperature is equal to
A
10
B
20
C
zero
D
None of these
9
MCQ (Single Correct Answer)
Choose the correct option mycorrhiza is a symbiotic association of fungus with root system which helps in
A. absorption of water
B. mineral nutrition
C. translocation
D. gaseous exchange
A
Only A
B
Only B
C
Bothg A and B
D
Both B and C