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In this article, we have brought to you the MCQ questions from the class 11 biology chapter "Plant Growth & Development". You can download the questions, their answers, and detailed solutions in a PDF format.
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Plant Growth & Development MCQ Questions for NEET PDF download
1. Rapid and dramatic increase in shoot length is called
a) Triple response growth
b) Bolting
c) scarification
d) Night brake effect
2. Environment heterophylly is seen in
a) Cotton
b) Coriander
c) Larkspur
d) Buttercup
3. Genetically dwarf plants can be induced to grow tall by using
a) Gibberellins
b) Phycobillins
c) Auxins
d) Cytokinins
4. Increased growth per unit of time is termed as
a) Nascent growth rate
b) Growth rate
c) Biomass
d) All of these
5. Which plant hormone promotes seed dormancy, and bud dormancy and causes stomatal closure?
a) IAA
b) Abscisic acid
c) GA
d) cytokinin
6. I. Lag phase → Log phase → Stationary phase
II. Geometric and Arithmetic phase of growth
III. Growth shown by all living organisms in vivo
IV. Lt=L0+rt
Match the above characters with sigmoid curve, arithmetic growth, embryo development and choose the correct option accordingly
Sigmoid curve Arithmetic Embryo
growth development
a) II, I, III, IV
b) I, III, IV, II
c) I, II, III, IV
d) III, IV, III
7. A plant has 13 hours of critical daylight under which conditions it will flower
Duration of light period - Duration of dark period
a) 13 11
b) 11 13
c) 12 12
d) 10 14
8. The shedding of leaves, flowers, or fruits due to changes in the hormonal balance in plants, is referred to as
a) Senescence
b) Discussion
c) Photoperiodism
d) vernalization
9. The phytohormone that induces cell elongation is known to be produced by a fungus. The asexual stage of this fungus is called
a) Rhizopus sexualis
b) Fusarium moniliformae
c) Gibberella fujikuroi
d) Fusarium oxysporum
10. Cytokinins are mostly
a) Glucosides
b) Amino purines
c) Acidic
d) phenolic