From the perspective of ecosystem composition, plants are producers and animals are consumers; From the basic structure of cells, plant cells have cell walls, but animal cells do not; From the point of view of nutrition and metabolism, plants are autotrophs, which can turn inorganic substances into organic substances, while animals are heterotrophs, which can only make use of existing organic substances.
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There are many differences between plants and animals. For example, plants are usually autotrophs, usually carry out photosynthesis, usually have roots, usually stay in one place, and usually do not move autonomously; Animals, on the other hand, are usually heterotrophs (feeding type), usually do not carry out photosynthesis, and usually keep in motion.
But these are "usual", that is to say, there are exceptions. Insect-eating plants, such as Venus flytrap, Nepenthes and Lauraceae, will catch insects as nutritional supplements, while some saprophytic plants (such as Crystal Orchid) and parasitic plants (such as Cuscuta chinensis and Taxilli) do not need photosynthesis.
The green eye worm of lower animals contains chlorophyll, which will survive in an autotrophic way through photosynthesis in sunny environment. Algae plants have no roots, and even some higher seed plants have no roots, for example, Sonchidia, which hangs on branches or wires and absorbs water vapor in the atmosphere with stems and leaves. Oysters will live in one place for life.
However, mimosa will make a quick action that is obviously visible to the naked eye. When the fruits such as Oxalis, Impatiens and Cucumber are ripe, they will suddenly collapse and pop out seeds.
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