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Plant Growth And Development Mock Tests

18 questions available

Plant Growth And Development Mock Test 1

Questions: 18

Sample Questions

Class 11 Biology
Which of the following plant growth regulators is primarily responsible for inducing seed dormancy and closing stomata during water stress?
A Auxin
B Gibberellin
C Abscisic acid (ABA)
D Cytokinin
Class 11 Biology
Plant growth promoters (hormones that INCREASE plant growth) include:
A Auxins, gibberellins, and cytokinins
B Abscisic acid and ethylene
C Abscisic acid and auxins
D Ethylene and gibberellins
Class 11 Biology
Which plant growth regulator is commonly used to promote lateral branching and bushy growth in garden plants?
A Auxin
B Cytokinin
C Abscisic acid (ABA)
D Gibberellin
Class 11 Biology
Differentiation is the process by which cells become specialized in structure and function. Which of the following statements about differentiation is correct?
A Differentiated plant cells cannot regain the ability to divide under appropriate conditions
B Differentiation is irreversible in both plant and animal cells
C Dedifferentiation is the process by which differentiated plant cells regain the capacity to divide
D Differentiation occurs only during embryonic development and not at any other stage
Class 11 Biology
Ethylene, unlike other plant hormones, is a:
A Gaseous plant hormone that promotes fruit ripening and senescence
B A liquid hormone produced in roots
C A solid hormone found in cell walls
D A hormone that only inhibits growth
Class 11 Biology
Abscisic acid (ABA) is often called a "stress hormone" in plants. Which of the following is a primary function of ABA?
A Promotion of cell division in meristems
B Induction of stomatal closure during water stress
C Promotion of fruit ripening
D Stimulation of flowering in short-day plants
Class 12 Biology
Florigen, the flowering hormone, is primarily composed of which protein that moves from leaves to the shoot apical meristem?
A FT (FLOWERING LOCUS T) protein, which interacts with FD transcription factor to activate floral meristem identity genes
B CAULIFLOWER protein, which represses flowering under non-inductive photoperiods
C SPERON protein, which degrades floral activators under short-day conditions
D DAFIN protein, which converts gibberellins into inactive forms during flowering
Class 11 Biology
Which plant growth regulator is used to break seed and bud dormancy?
A Abscisic acid (ABA)
B Gibberellin (GA₃)
C Ethylene
D Indole-3-acetic acid (IAA)

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