Exponential growth is shown by:
1. Unicellular forms
2. A cell in tissue culture
3. Embryo
4. Multicellular plants
If the apical bud has been removed then we observe:
1. More lateral branches
2. More axillary buds
3. Plant growth stops
4. Flowering stops
Which hormone is responsible for fruit ripening:
1. Ethylene
2. Auxin
3. Ethyl chloride
4. Cytokinin
Geocarpic fruits are:
1. Carrot
2. Radish
3. Ground nut
4. Turnip
By which action a seed coat becomes permeable to water:
1. Scarification
2. Stratification
3. Vernalization
4. All of the above
Which of the following PGR is present in coconut milk which is used in tissue culture?
1. Cytokinin
2. Auxin
3. Gibberellin
4. Ethylene
Which pigment absorbs the red and far red light:
1. Cytochrome
2. Phytochrome
3. Carotenoids
4. Chlorophyll
Seed dormancy is due to:
1. Ethylene
2. Abscisic acid
3. IAA
4. Starch
Differentiation of shoot is controlled by:
1. High auxin : cytokinin ratio
2. High cytokinin : auxin ratio
3. High gibberellin : auxin ratio
4. High gibberellin : cytokinin ratio