Short Notes:

Animal must constantly search for food, but plants just stand still and make their own food. They use the energy in sunlight to convert carbon dioxide and water drawn from air and soil in sugar. This process, called photosynthesis, occurs within a plant's leaves, Carbon dioxide enters a leaf through tiny pores, called stomata, whereas water is transported to the leaves from the roots. The by-product of phtosynthesis is the oxygen released by plants, which animals must breathe to live.

Photosynthesis provides a plant with all the food energy it needs to grow. Plants, however, also require other nutrients, such as phosphorus, nitrogen, potassium, and iron, to remain healthy. Plants obtain these substances from the soil through their roots.

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