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Biology 17 Online
jabez177 (jabez177):

Why don’t plants need a digestive system? A. They do not need nutrients to grow and develop. B. They use energy from the sun to make their own food. C. They create oxygen, which they use as food. D. They absorb water and food through their roots.

jabez177 (jabez177):

@pizza12

OpenStudy (anonymous):

it is b because they make their own food from the sun

OpenStudy (barreraa):

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.

OpenStudy (anonymous):

its b they don't eat food and swallow it like we do. Duh.

OpenStudy (anonymous):

B :)

OpenStudy (anonymous):

OK, so that's easy. Plants don't eat food.

jabez177 (jabez177):

Thanks @pizza12 and everyone else

OpenStudy (anonymous):

@AnswerThatQuestion Actually, Plants Do eat food. All they need for their living is carbondioxide in air ,water and some nutrients .so basically their roots are responsible for collection of water which contains life giving nutrients .but we take food as a solid substance which has to be converted into energy.digestive system absorbs valuable nutrients ,proteins etc. So for that cause, it is B.

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