Welcome to your Plant Physiology
1.
Compensation point means the condition
3.
To increase sugar production in sugarcanes, they are sprayed with
4.
The phytohormone that helps in the germination of seeds is
5.
Internodal elongation is associated with
6.
A phytohormone existing in gaseous state is
7.
Transpiration pull will be maximum under which of the following conditions?
8.
Which of the following regulate closure of stomata?
9.
A plant is kept in a dark cupbord for about 48 hours before conducting any experiment on photosynthesis to
10.
The phytohormone that prevents the germination of seeds is
11.
The production of starch and not glucose is often used as a measure of photosynthesis in leaves because
13.
Osmosis involves diffusion of
14.
The specific function of light energy in the process of photosynthesis is to
15.
In the process of Osmosis in a cell:
17.
If the rate of transpiration becomes more than the rate of photosynthesis, plants will
18.
The hormone responsible for phototropism and geotropism is
19.
Which one of the following would not be a limiting factor for photosynthesis?
20.
Stomata open during the day and close at night because
21.
Plants lose water by guttation when
22.
Transpiration is very low during the storms due to
23.
Marine fish when thrown under tap water bursts because of
24.
The rate of photosynthesis is not affected by
26.
Which one of these reaction occurs during photosynthesis?
27.
Positive geotropism is exhibited by
28.
Which of the following is not an effect of ethylene?
29.
A plant hormone related with inhibition of senescence is
30.
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with
31.
When a plant wilts, the sequence of events is as follows:
32.
Cell division in plants is promoted by
33.
In the mechanism of opening and closing of stomata, the important factor is
34.
Which would do maximum harm to a tree?
35.
Process of endosmosis stops
36.
When cell is fully turgid, which of the following will be zero?
38.
Guttation is the elimination of excess of water from plants through
39.
In hot summer days, plant cooling is due to
40.
Water will be absorbed by the root hairs when:
41.
A cell that lacks chloroplast does not
42.
One of the synthetic auxin is
43.
Seeds when soaked in water imbibe in it because
44.
A plant hormone for inducing Morphogenesis in plant tissue culture is
45.
Which one of the following pairs is not correctly matched?
Superb