Question

Circulatory system does not exist in which of the following organisms

Answer 1

Explanation:

Animals without circulatory systems: Simple animals consisting of a single cell layer, such as the

(a) sponge, or only a few cell layers, such as the

(b) jellyfish, do not have a circulatory system. Instead, gases, nutrients, and wastes are exchanged by diffusion.

Answer 2

Answer:

cockroach

Explanation:

you did not give options but here is the answer

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