Question

Clinostat is the apparatus, which is used to

• A. Eliminate the effect of gravity causing geotropism.
• B. Identify the chemicals present in stem tip.
• C. Measure growth rate.
• D. Measure growth of stem.

Answer 1

Answer: (A)

The correct option is B Eliminate the effect of gravity causing geotropism.
The phenomenon of geotropism explains the movement of the plant towards the ground. This is due to the gravitational pull which allows the plant to move. There is a gravitational force acting on all the sides. The clinostat is the device which was used to remove the effects of the gravitational force on the plants. The device rotates to cancel the amount of force which is acting on all the sides and then study the movement of the plant cells when externally force is provided.

Thus, the correct answer is option B.