EVERYDAY SCIENCE

Detailed explanation-1: -Oxygen is released through openings in the leaf called stomata. Photosynthesis provides the oxygen in the atmosphere that living things need. Stomata are pores found mostly on the underside of leaves. Gasses pass through these pores during photosynthesis and respiration.

Detailed explanation-2: -The first things that form are a tiny root (to get water and nutrients), and the stem and leaf cells. These cells then rapidly divide and divide, letting the stem push up and out of the soil towards the light. Once cells in the stem sense light, the tiny curled up leaves get the signal to open.

Detailed explanation-3: -Leaves are generally composed of a few main parts: the blade and the petiole. Figure 13.1. 2: A leaf is usually composed of a blade and a petiole.

Detailed explanation-4: -The leaf blade: It is also called the lamina. It’s generally broad and flat. The petiole: It is the stalk-like structure which connects the leaf blade to the stem. The petiole has tiny tubes, that connect the veins on the leaf blade to the stem.