1. What are the main parts of a plant and their functions

A leaf consists of three main parts: i) the petiole, ii) leaf base, and iii) lamina or leaf blade. Functions. Making food for the plant with the help of sunlight, carbon dioxide, and water through photosynthesis. Helping in reproduction such as in Bryophyllum, a group of sprout leaf plants.

Explanation:

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

the answer is 1. photosynthesis. glad to