Plant Growth and Development ( Seed germination; Phases of Plant Growth and Plant Growth Rate; Conditions of Growth; Differentiation, Dedifferentiation and Redifferentiation; Sequence of Developmental Process in a Plant Cell; Growth Regulators Auxin, Gibberellin...) NEET Questions

Biology - Plant Physiology

Plant Growth and Development ( Seed germination; Phases of Plant Growth and Plant Growth Rate; Conditions of Growth; Differentiation, Dedifferentiation and Redifferentiation; Sequence of Developmental Process in a Plant Cell; Growth Regulators Auxin, Gibberellin...) MCQ Questions


13.
Geometric growth is described by the equation:
A.
Wt = W0 × t
B.
Wt = W0 × e^(rt)
C.
Wt = W0 + rt
D.
Wt = W0 - rt
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ANSWER :
B. Wt = W0 × e^(rt)
14.
The S-shaped or sigmoid growth curve is typical of:
A.
Most living organisms in natural environments with limited resources
B.
Only viruses
C.
Only bacteria
D.
Only fungi
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ANSWER :
A. Most living organisms in natural environments with limited resources
15.
Absolute growth rate refers to:
A.
Total growth per unit time
B.
Growth at a specific point
C.
Maximum possible growth
D.
Growth per unit initial size per unit time
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ANSWER :
A. Total growth per unit time
16.
Relative growth rate (RGR) is:
A.
Growth in absence of limiting factors
B.
Maximum growth in lifetime
C.
Total growth divided by total time
D.
Growth per unit time per unit initial parameter
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ANSWER :
D. Growth per unit time per unit initial parameter
17.
Two leaves L1 and L2 increased in area by 5 cm² and 10 cm² respectively. If the initial sizes were 5 cm² and 50 cm², which has a higher relative growth rate?
A.
L1 has higher RGR (1.0) compared to L2 (0.2)
B.
L2 has higher RGR
C.
Both have equal RGR
D.
Cannot be calculated
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ANSWER :
A. L1 has higher RGR (1.0) compared to L2 (0.2)
18.
Plant growth requires which of the following conditions?
A.
Only sunlight
B.
Water, oxygen, and nutrients (besides temperature, light, and CO2)
C.
Only water
D.
Only minerals
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ANSWER :
B. Water, oxygen, and nutrients (besides temperature, light, and CO2)