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This video walks through the major internal cell types, including the waxy cuticle, upper epidermis, palisade mesophyll... Leaves come in many shapes and sizes.
- 6 min
- 178.5K
- BOGObiology
Key points. The leaf is one of the most important organs of a plant. Leaves produce food for the plant through a process called photosynthesis. The leaves of different plants vary widely in size,...
Guard cells control the size of the stomata so that the leaf does not lose too much water in hot, windy or dry conditions. The lower part of the leaf is a spongy layer with loose-fitting cells.
Xylem cells run inside stems of plants from their roots to their leaves. Xylem cells die and their ends break down. This allows them to form long tubes to carry water upwards for photosynthesis.
So, a cell wall is made of fibres to strengthen the cell, and then a cell membrane controls which substances enter and leave the cell. A chloroplast is where the light is trapped to help make the plant's food.
This science lesson provides a practical life experience by introducing the child to the different shapes and colors of leaves. It guides the child about the structure of a leaf and its characteristics by labeling the different parts of the leaf, like the apex, veins, stem, etc.
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Mar 22, 2022 · Learn about the structure and function of the cells in leaves. Leaves are essential to life on earth. They can be tiny, like the leaves of the common water fern (Azolla filiculoides), which are just one millimetre in length. And they can be large, like the leaves of the raffia palm (Raphia regalis) that can grow to be 25 metres in length.
