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To remove undigested food and bodily waste from their system
Waste is removed through a designated opening
what is the difference between undigested food and metabolic waste
A hydra removes undigested food the same ways it takes in food. A hydra takes in it's food through it's tentacles, so it removes food the same way because it's like a pipe stuck in the ground and there is only one way in and one way out.
undigested food
The elimination
Undigested food waste is excreted through the anus.
The volume of the undigested food decreases as it passes through the large intestine. As the colon absorbs excess water from undigested food waste, the volume of that waste decreases.
vacule
Undigested food - and bacteria.
The colon absorbs water from undigested food waste so that the waste can be excreted as feces.
Faeces is made from undigested waste food in your body, mucus and toxins