Question

mode of respiration (a)hydria,planarians (b)reptiles​

Answer 1

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Yes, organism like Hydra, planaria

Yes, organism like Hydra, planariaand roundworms can respire

Yes, organism like Hydra, planariaand roundworms can respirethrough the process of diffusion.

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Answer 2

$\: \: \: \: \small\bf\underline{Mode \: of \: respiration : Hydra }$

→ Hydra lack specialized respiratory system. Respiration occurs in Hydra by means of diffusion. Hydra has only 2 cell layers, so its body is thin enough to allow for diffusion.

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$\: \: \: \: \small\bf\underline{Mode \: of \: respiration : Planaria }$

→ The mouth is located in the middle of the underside of the body, which is covered with cilia (hairlike projections). There are no circulatory or respiratory systems; oxygen entering and carbon dioxide leaving the planarian's body diffuses through the body wall.

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$\: \: \: \: \small\bf\underline{Mod e \: of \: respiration : Reptiles }$

→ Respiratory System. All reptiles breathe through their lungs. The reptile lung has a much greater surface area for the exchange of gases than the lungs of amphibians. ... A few lizard species use their throat muscles to “gulp” air in a process called buccal pumping (a process also used by amphibians).

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