Multiple Choice QuestionsMatch the items in column I with those in column II and choose the correct answer
| Column I | Column II |
| A. Control of weeds | 1. Gibberellin |
| B. Induction of germination | 2. Cytokinin |
| C. Ripening of fruit | 3. 2, 4- D |
| D. Delaying of senescence | 4. Ethylene |
A- 2; B- 4; C- 3; D- 1
A- 3; B- 1; C- 4; D- 2
A- 1; B- 2; C- 4; D- 3
A- 2; B- 3; C- 1; D- 4
The aleurone synthesises and secretes digestive enzymes that hydrolyse nutrients stored in the endosperm, in the presence of
auxin
gibberellin
cytokinin
ethylene
Vernalisation promotes flowering by
low temperature
high temperature
prolonged photoperiod
short photoperiod
Which one of the following is correct for blooming of 'short day' plants?
The long dark period is not critical
It is affected by interruption of long dark period by brief exposure of light
It is not affected by interruption of long dark period by brief exposure of light
It is affected if the continuous light period is interrupted
B.
It is affected by interruption of long dark period by brief exposure of light
Short day plants flower when exposed to day lengths shorter than a certain critical duration. Interruption by dark during long light period does not stimulate flowering. It means they do not flower if dark period is interrupted by a flash of light. They are also called long night plants. Whereas interruption by dark during long light period does not inhibit flowering in long-day plants (short-night plants).
The hormone involved in the regulation of florigen synthesis is
ethylene
zeatin
cytokinin
gibberrellin
Statement I : Sugar beet, cabbage, carrot like plants are monocarpic.
Statement II : Both vernalisation and photoperiodism are related to flowering.
Statement I is correct, but Statement II is incorrect
Statement II is correct, but Statement I is incorrect.
Both statements are correct.
Both statements are incorrect.
Fruit ripening is promoted by the hormone that also
promotes thinning of fruits in cherry and walnut
induce parthenocarpy in tomato
promote flowering in lemma
induce dormancy
The correct sequence of cellular growth stages is
division differentiation elongation
differentiation division elongation
division elongation differentiation
elongation differentiation division
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