Chapter 15 Plant Growth and Development - Online Test

Q1. Select the wrong statement from the following:
Answer : Option D
Explaination / Solution:
No Explaination.


Q2. If the diameter of the pulley is 6 inches, length of pointer is 10 inches and distance travelled by pointer is 5 inches. Calculate the actual growth in length of plant.
Answer : Option D
Explaination / Solution:

Diameter of pulley = 6 inches

Radius of pulley = 3 inches

Actual growth in length = [Distance travelled by the pointer x Radius of the pulley] / Length of the pointer

= [5 x 3] / 10 = 1.5


Q3. In unisexual plants, sex can be changed by the application of
Answer : Option C
Explaination / Solution:
No Explaination.


Q4.

Select the correctly matched one

A) Human urine i) Auxin –B

B) Corn gram oil ii) GA3

C) Fungus iii) Abscisic acid II

D) Herring fish iv) Kinitin sperm

E) Unripe maize v) Auxin A grains

F) Young cotton vi) Zeatin bolls

Answer : Option B
Explaination / Solution:
No Explaination.


Q5. Seed dormancy allows the plants to
Answer : Option A
Explaination / Solution:
No Explaination.