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It contains nutrients by the food particle. It stores nutrients and then it move onward to the digestive system. It contains nutrients by the food particle. It stores nutrients and then it move onward to the digestive system. ADDED: A single-celled organism, such as an amoeba, cannot be said to have a digestive "system", but still digests its food by breaking it down chemically.
circulatory system, digestive system, respiratory system
respiratory, circular and digestive systems
Plants do not have a digestive system because their need for nourishment is fulfilled through the process of photosynthesis and cellular respiration. They obtain their energy and and nutrients from the energy of the sun to create their supply to live. Therefore using characteristics such as the sun and water their physical nature does not allow them to rely on a digestive system to obtain their need for energy, when their need is supplied almost directly for the sun.
what does nutrients got to do with the respiratory
Everything needs some sort of nutrients to live. Fungi get their nutrients from photosynthesis, plants do the same and obtain it from the roots, animals obtain their nutrients from eating plants, and other animals.
Tapeworms absorb food through their skin, they no longer have an alimentary canal.
All organisms need nutrients.
Mushrooms get their nutrients by decomposing organic matter.
Unicellular organisms obtain nutrients by absorbing them.
water
by water