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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