Question

A process by which transportation of materials occurs in lower animals​

Answer 1

Answer:

Circulation in lower animals

Circulation in lower animalsIn unicellular organisms like amoeba and paramecium, circulation is brought about by the process of diffusion. Nutrients are delivered to all parts of the cell by diffusion.

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Answer 2

Answer:

Circulation in lower animals

In unicellular organisms like amoeba and paramecium, circulation is brought about by the process of diffusion. Nutrients are delivered to all parts of the cell by diffusion. In multicellular organisms like hydra and jellyfish, nutrients are circulated in the body by water vascular system.

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