Question

Which of the following has no blood but respire

1. Earthworm

2. hydra

3. cockroach

4. fish

No spam

Answer 1

hydra has no blood but they respire

Answer 2

Answer:

The answer is Hydra. Hydra does not have blood, but do not respire.

Explanation:

Hydra is a member of phylum Cnidaria where in the course of evolution, blood or any body fluid is not formed.

Hydra is marine organisms which use seawater to draw their nutrition and to excrete their excretory products. It is discharged through their mouth.

Hydra does not age at all. It is diploblastic, meaning it has got two main layers.