1
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

While describing the dynamics of growth in plants, Relative Growth Rate (RGR) is determined by the following formula.

A

$\mathrm{RGR}=\frac{\mathrm{dn}}{\mathrm{dt}}$

B

$\mathrm{RGR}=\frac{\mathrm{dt}}{\mathrm{dn}}$

C

$\mathrm{RGR}=\frac{\mathrm{n}}{\mathrm{AGR}}$

D

$\mathrm{RGR}=\frac{\mathrm{AGR}}{\mathrm{n}}$

2
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following phytohormones causes epinasty?

A

Auxins

B

Gibberellins

C

Ethylene

D

Abscissic acid

3
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

If dark period is interrupted by a flash of red light of 660 nm , then SDP will not flower. But if it is immediately followed by _________ then SDP will flower.

A

far red light of 660 nm

B

far red light of 730 nm

C

red light of 660 nm

D

red light of 730 nm

4
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

The figure shows photoperiodism. Identify its correct explanation from the following.

MHT CET (PCB) 2025 9th April Morning Shift Biology - Plant Growth and Development Question 1 English
A

Short day plants flower

B

Short day plants do not flower

C

Long day plants do not flower

D

Day neutral plants do not flower

MHT CET (Biology) Subjects

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