Give reason- 1) Arteries are thick walled. 2) Blood goes only once in one cycle through the hesrt in fishes. 3) Plants have low energy needs.
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Give reason- 1) Arteries are thick walled. 2) Blood goes only once in one cycle through the hesrt in fishes. 3) Plants have low energy needs.
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2)Single circulatory system. In the circulatory system of a fish, the blood travels from the heart to the gills, where it absorbs oxygen and releases carbon dioxide. It then flows from the gills to the organs and tissues in the rest of the body, and back to the heart. There is just one circuit from the heart.
3)Plants do not need to move from one place to another. Movements in a plant are usually at the cellular level and hence a far less amount of energy is required byplants. ... So, the energy need of animals is pretty higher than of plants.
2. Blood goes only once through the heart of fishes in one cycle because they have a two chambered heart . They take oxygen through gills where the blood is oxygenated and passed through the heart to the rest of the body.
3. Plants have low energy needs because they are fixed in their position , they don't have to hunt preys like animals.