with the help of two examples, show that our food comes directly or indirectly from plants.
Answers
Answer:
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Explanation:
Plants are one of the two major groups of living organisms that are an essential entity to the function of the biosphere.
They are the only life forms that can produce their own food using energy from sunlight. Plants have green pigment called chlorophyll in their cells, mainly in the leaves. This pigment allows plants to make food from sunlight, water and carbon dioxide in a process called photosynthesis. Plants manufacture much more food than they can readily utilize and they store up this excess as a reserve in leaves, stems, roots, fruits or seeds, for future use. It is this supply of reserves that is used by humans and animals. Although many synthetic chemicals can replace other plant-derived materials, there is no substitute for plant-derived food. Without plants, life would not be sustained on earth. People depend upon plants to satisfy their basic human needs such as food, clothing, shelter, and medicine
The essential foods produced by plants are carbohydrates, fats and proteins, each being of value in its own way to human and animal metabolism. There are also mineral salts, organic acids, vitamins and enzymes that are required for general health. Plants have different parts that are used as food. The most important of these for humans are seeds and fruits, which are found in cereals and small grains, legumes and nuts. These contain large amounts of nutritive material and have proportionately low water content, which enhances their value because they can be stored and transported with ease.
Answer:
plants are one of the two major groups of living organisms that are essential entity to the function of the biosphere