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Question
Which of the following organisms excrete substances out of their body through simple diffusion?
Which of the following organisms excrete substances out of their body through simple diffusion?
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Solution
The correct option is B Bacteria
Unicellular or single celled organisms do not have organs to carry out various processes in their body. All the activities are carried out by one single cell that they have. Exchange of materials between the environment and the cell takes place by simple diffusion. Waste products are directly released into the surrounding.
Earthworms have structures called nephridia for excretion. Fishes and humans have kidneys for excretion.
Unicellular or single celled organisms do not have organs to carry out various processes in their body. All the activities are carried out by one single cell that they have. Exchange of materials between the environment and the cell takes place by simple diffusion. Waste products are directly released into the surrounding.
Earthworms have structures called nephridia for excretion. Fishes and humans have kidneys for excretion.
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