Role of Ethylene
Trending Questions
The removal of seed- dormancy by mechanical method applied on seed coat is called
Stratification
Vernalization
Photoperiodism
Scarification
Ethylene, a plant growth regulator functions in the form of a
Liquid
Gas
Solid
Crystal
- It is associated with an increase in the rate of respiration
- It is found in fruits like apples, bananas, melons, tomatoes
- It causes colour change and sugar release in fruits
- All the above
Match the names of plant hormones mentioned under column I, with the physiological effects listed under column II. Choose the answer which gives the correct combinations of the alphabets
Column IColumn IIPlant HormonesPhysiological EffectAGibberellineCell divisionBAuxinfInternodal elongationCKinetingRipening of fruitsDEthylenehAbscissioniApical dominance
A = f, B = e, C =i, D = g
A = f, B= g, C = i, D = e
A = f, B = C = g, D =e
A = f, B = i; C = e, D = g
- tomatoes
- bananas
- melons
- all of the above
"Senescence" is promoted by the application of
NAA
IBA
2, 4-D
Ethephon
Transpiration does not affect which one of these?
a-quality of fruit
b-respiration rate
c-development of mechanical tissue
d-translocation of solutes
Which of the following is not an effect of ethylene?
Promotes senescence and abscission of plant organs
Breaks seed and bud dormancy
Brings about horizontal growth of seedlings
Hastens fruit ripening
Helps to overcome apical dominance
Column I | Column II |
A. 2, 4-D | i. Promoting bolting in biennials |
B. GA3 | ii. Promotes female flower in cucumbers |
C. Cytokinins | iii. Induce dormancy in seeds |
D. Ethephon | iv. Herbecide to kill dicotyledonous weed |
E. ABA | v. Delay leaf senescence |
- A- ii, B-iv, C-i, D-iii, E-v
- A- iv, B-i, C-v, D-ii, E-iii
- A- i, B-v, C-ii, D-iii, E-iv
- A- iii, B-ii, C-iv, D-v, E-i
- CH4
- CH2
- C2H4
- CO2
- Breaking of bud dormancy
- Sprouting of potato tubers
- Internode elongation in deep water rice plants
- All of the above