Welcome to your Plant Physiology
1.
To increase sugar production in sugarcanes, they are sprayed with
2.
The hormone responsible for phototropism and geotropism is
3.
The phytohormone that prevents the germination of seeds is
4.
When cell is fully turgid, which of the following will be zero?
5.
Osmosis involves diffusion of
6.
Compensation point means the condition
8.
Internodal elongation is associated with
9.
Which one of the following pairs is not correctly matched?
10.
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with
11.
Water will be absorbed by the root hairs when:
12.
The phytohormone that helps in the germination of seeds is
13.
In hot summer days, plant cooling is due to
14.
Which one of the following would not be a limiting factor for photosynthesis?
15.
In the mechanism of opening and closing of stomata, the important factor is
16.
If the rate of transpiration becomes more than the rate of photosynthesis, plants will
17.
Transpiration is very low during the storms due to
18.
The rate of photosynthesis is not affected by
19.
A phytohormone existing in gaseous state is
20.
Marine fish when thrown under tap water bursts because of
21.
Which of the following regulate closure of stomata?
22.
Which one of these reaction occurs during photosynthesis?
23.
Process of endosmosis stops
24.
When a plant wilts, the sequence of events is as follows:
25.
Positive geotropism is exhibited by
26.
Plants lose water by guttation when
28.
Cell division in plants is promoted by
29.
Transpiration pull will be maximum under which of the following conditions?
30.
A plant hormone related with inhibition of senescence is
31.
A plant is kept in a dark cupbord for about 48 hours before conducting any experiment on photosynthesis to
32.
A cell that lacks chloroplast does not
33.
A plant hormone for inducing Morphogenesis in plant tissue culture is
35.
Which of the following is not an effect of ethylene?
36.
In the process of Osmosis in a cell:
37.
Guttation is the elimination of excess of water from plants through
38.
The specific function of light energy in the process of photosynthesis is to
39.
Stomata open during the day and close at night because
41.
The production of starch and not glucose is often used as a measure of photosynthesis in leaves because
43.
Seeds when soaked in water imbibe in it because
44.
One of the synthetic auxin is
45.
Which would do maximum harm to a tree?
Superb