Growth in plant can be measured by _____ (a) Clinostat (b) Auxanometer (c) Manometer (d) Potometer
Hint: Growth in plants leads to the lengthening of the stems and roots of plants. Plants like woody plants increase in thickness during growth.
Complete Step by Step Answer: A clinostat is a device that removes the effects of gravitational forces on the growth of a plant. A clinostat uses rotation to remove gravitational effects. Clinostats are used for the study of the effects of microgravity on the following substances: 1. Cell culture 2. Animal embryos 3. Spider webs A manometer is a device that measures pressure. A manometer is a U-shaped tubed device that is partially filled with a fluid of any nature. The manometer is placed against a measuring scale and the columns are allowed to showcase a difference in height. This height difference can be used to analyze the relative pressure between different pressures. A potometer is a device that can be used to measure the water uptake by a plant. The measured water is almost the same as the amount of water lost through transpiration. A plant uptakes water because of the processes of photosynthesis and transpiration. An auxanometer is a device used to measure the growth of plants. The rate of growth of a plant is determined by dividing the total growth of a plant with the time taken for the growth of the plant.
Therefore, growth in a plant can be measured by an auxanometer. Hence, the correct answer is (b) Auxanometer.
Note: A clinostat with a single axis is made up of a disc attached to a motor. The motor is an electric motor but the motor was previously a clockwork motor. A manometer can be used to calculate the pressure accurately when the density of the fluid in the manometer is known. A potometer is also known as a transpirometer.