Answer:
Decreases transpiration rate.
Step-by-step explanation:
It greatly affect the rate of transpiration because the mud act as insulator. Due to insulating nature, the plant body does not heat up and so less transpiration occurs from the plant body as compared to that plant which is fully exposed to sunlight. If the plant is exposed to the sunlight so the rate of transpiration increases and all water present on the surface of plant evaporated.