EVERYDAY SCIENCE

Detailed explanation-1: -Auxanometer is used to measure the growth in length of a plant organ. Growth is measured by measuring an increase in length, volume, area, diameter, etc. There are two types of auxanometers, i.e. Arc Auxanometer and Pfeffer’s Auxanometer (automatic auxanometer).

Detailed explanation-2: -Auxanometer is the instrument with which we determine the rate of growth in plants.

Detailed explanation-3: -In case of an arc auxanometer, there is a wire fixed with the plant apex on one end and a dead-weight on the other. It passes over a pulley which has a pointer attached to it. When the plant’s height increases, the pulley rotates and the pointer moves on a circular scale to directly give the magnitude of growth.

Detailed explanation-4: -This delicate instrument makes growth measurements as small as a micrometer. Complete answer: > Option A is correct. An auxanometer, also referred to as an arc-indicator, is defined as an apparatus used to measure plant growth.

Detailed explanation-5: -The best way to measure the growth of a plant is by the use of an auxanometer. Auxanometer is a device which is used to measure the growth of a plant. In plants growth is defined when the length of roots and stems increase in size. In the process of growth no new organs should be formed.