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Plant Growth And Development Mock Tests

18 questions available

Plant Growth And Development Mock Test 1

Questions: 18

नमूना प्रश्न

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 11 Biology
Abscisic acid (ABA) is often described as a "stress hormone" in plants because it:
A Helps plants cope with water stress by inducing stomatal closure and promoting seed dormancy during unfavorable conditions
B Promotes rapid growth during stressful conditions
C Increases photosynthesis during drought
D Deletes damaged DNA during stress
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 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 hormone is primarily responsible for the "triple response" seen in seedlings growing in dark soil — short hypocotyl, thickened stem, and horizontal growth?
A Auxin
B Gibberellin
C Ethylene
D Cytokinin
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
Which plant growth regulator is primarily responsible for the phenomenon of bolting, where the internodes between leaves elongate rapidly before flowering?
A Abscisic acid (ABA)
B Gibberellin (GA)
C Ethylene
D Cytokinin
Class 11 Biology
Vernalization is the promotion of flowering by exposure to low temperatures. Which plant hormone is involved in mediating the vernalization response?
A Gibberellin
B Florigen (FT protein)
C Abscisic acid
D Ethylene

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