Message to my viewers....
Hello!!! Dear teachers and friends!!! Welcome To my website. I have produced this website to teach people about living things, but mostly leaves ... Here you can find a collection of information about leaves including what they are ..... Which will hopefully teach you more about plants and leaves in particular... You can edit and judge my work ! Please place comments only if necessary. You may praise on what I have done well and suggest improvements on what I should work on in the future, by doing a survey..... Hope you enjoy my work !!! |
Some things in my website...Leaves are the making factories of green plants. They come in different shapes and sizes. Leaves can always be simple. They are made of a single leaf blade connected by a petiole to the stem. An oak leaf or maple leaf are examples of leaves. A compound leaf is a leaf made up of seperate leafets attached by a petiole to the stem similar to an ash.
Plant cells have several features in common with animal cells, but there are also some differences. Unlike animals, plants need to make their own food with the help of sunlight, carbon dioxide and water. They do this in a process known as photosynthesis. Photosynthesis occurs in organelles called chloroplasts inside leaf cells. Chloroplasts may be seen using a light microscope. Chloroplasts contain a green chemical, chlorophyll, which traps the light, energy plants need for photosynthesis. The cell wall contains a tough muscular material called cellulose and provides the support needed by the plant cell.
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Epidermis
The epidermis is a single-layered group of cells that covers the leaves, flowers, roots and stems of a plant. It acts as a boundary between the plant and its outer environment. The epidermis has many functions; it protects against water loss, controls the gas exchange, lets out metabolic compunds, and absorbs water and mineral nutrients (especially in roots).