Multiple Choice QuestionsIn some organisms, karyokinesis is not followed by cytokinesis as a result of which, the multinucleate condition arises leading to the formation of the syncytium. The perfect example of this is
The appearance of a furrow in the cell membrane
Liquid endosperm in coconut
Sexual reproduction
Fertilization
Which one of the following pair is not correctly matched?
Almond-Drupe
Brinjal-Berry
Guava-Pepo
Loquat-Pome
Compare the statements I and II and choose the correct option.
Statement (I) Auxin promotes apical dominance by suppressing the activity of lateral buds.
Statement (II) In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
Choose the correct options
I is false, but II is true
II is false, but I is true
Both I and II are true
Both I and II are false
The quiescent centre in root meristem serves as a
Site for storage of food, which is utilised during maturation
Reservoir of growth hormones
Reserve for replenishment of damaged cells of the meristem
Region for absorption of water
Which one of the following pairs, is not correctly matched?
Abscisic acid - Stomatal closure
Gibberellic acid - Leaf fall
Cytokinin - Cell division
IAA - Cell wall elongation
Induction of flowering by low temperature treatment is
vernalization
cryobiology
photoperiodism
prunning
A.
vernalization
Vernalization is chilling or cold treatment of the young plants in order to induce flowering. It is a process for shortening the juvenile or vegetative phase of the plants in order to fasten the flowering process. Common examples includes winter rye, winter wheat, winter barley, pea etc.
Cryobiology is the study of life at low temperature, ie, at liquid nitrogen and preservation of organisms by chemical methods.
Photoperiodism is the effect of photoperiods or daily duration of light hours on the growth and development of flowering in plants.
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