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□¡□Biology of Plants□¡□

↓●What is photosynthesis●↓
Photosynthesis is the process by which plants make food from light, water, nutrients, and carbon dioxide. What is chlorophyll?
Chlorophyll is the green pigment, or color, found in plants that helps the plant make food.
P lants are very important to us. All food people eat comes directly or indirectly from plants.
Directly from plants:
Indirectly from plants:
For example, apples come from an apple tree. The flour used tomake bread comes from a wheat plant.
Steak comes from a cow, and we all know that cows are animals, not plants, right? But what does the cow eat? It eats grass and grains—PLANTS!
So all the foods we eat come from plants. But what do plants eat? Theymake their own food!
What Do Plants Need to Make Food? Plants need several things to make their own food.
They need:
*. chlorophyll, a green pigment found in the leaves of plants (see the layerof chlorophyll in the cross-section ofa leaf below)
*. light (either natural sunlight or artificial light, like from a light bulb)
*. carbon dioxide (CO 2 )(a gas found inthe air; one of the gases people and animals breathe out when they exhale)
*. water (which the plant collects through its roots)
*. nutrients and minerals (which the plant collects from the soil through its roots)
Plants make food in their leaves. Theleaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food theplant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.
During the process of photosynthesis,plants release oxygen into the air. People and animals need oxygen to breathe.


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