A) respiration
B) transpiration
C) plant movement
D) growth
Correct Answer: D
Solution :
Two types of auxanometer (Arc and Pfeffers automatic auxanometer) are used for measuring the growth of plant (in length) Growth is a vital process, which brings about a permanent change in any plant or its part in respect to its size, form, weight and volume. Plant movement is the bending, twisting and elongation of certain plants parts or organ etc in response to certain stimuli and irritability and sensitivity of protoplasm. Transpiration is the loss of water from the living tissue of aerial parts of the plant in form of water vapour. It is measured by experiments. Respiration is a vital process of oxidation of various food materials to obtain energy to keep the life process in motion.
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