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TRANSPORT IN PLANTS
Question 21 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |
Phytohormone connected with closing of stomata is ..... [BHU 2002]
ABA | |
Kinetin | |
GA | |
IBA |
Question 22 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |
A cell kept in a solution increases in volume. The solution is ..... [Pb. PMT 2001]
Hypotonic | |
Isotonic | |
Hypertonic | |
Either a or b |
Question 23 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |
Stomatal opening and closing is due to ..... [AFMC 2011]
Change is turgidity of guard cells | |
Cellulose microfibril of guard cells are oriented radially | |
The inner wall of each guard cell is thick and less elastic | |
All the above |
Question 24 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |
When half the leaves are removed randomly, transpiration will show ..... [JIPMER 1999]
Higher magnitude but lower flux or rate per unit | |
Lower magnitude but higher flux | |
Both magnitude and flux increase | |
Both magnitude and flux decrease |
Question 25 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |
At constant temperature, the rate of transpiration will be higher at ..... [CBSE 1992]
Sea level | |
1 km below sea level | |
1 km above sea level | |
1.5 km above sea level |
There are 25 questions to complete.