CBSE
Multiple Choice QuestionsStatement 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.
The aleurone synthesises and secretes digestive enzymes that hydrolyse nutrients stored in the endosperm, in the presence of
auxin
gibberellin
cytokinin
ethylene
Auxin was first named by
C Darwin
FW Went
Alexopolus
KV Thimann
The hormone involved in the regulation of florigen synthesis is
ethylene
zeatin
cytokinin
gibberrellin
Match 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 correct sequence of cellular growth stages is
division differentiation elongation
differentiation division elongation
division elongation differentiation
elongation differentiation division
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
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
Elongation of internode is caused by
ethylene
gibberellin
abscisic acid
cytokinin
Vernalisation promotes flowering by
low temperature
high temperature
prolonged photoperiod
short photoperiod
