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Get Answers to all your Questions
- #National Eligibility Cum Entrance Test
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Which of the following do not have a respiratory system?
Option: 1
Hydra
Option: 2
Spongilla
Option: 3
Both A and B
Option: 4
None of the above
Answers (1)
Physiology of Cnidaria -
- Respiration in Cnidaria:
- The respiratory system is absent.
- The exchange of gases is facilitated through simple diffusion between cells and water.
-
Respiratory system is absent in both porifera and coelenterata.
View full answer
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