Operculum

Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could ...

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Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could ...

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as the title says i would appreciate some help about respiration of holocephali and the evolution of operculum and the one gill opening thx

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... seem too vague? For fish I would say that they pumo water throught their mouth and over the gill arches using coordinated movements of the jaw and operculum (gill covers) for the ventilation. Each gill arch has two rows of gill filaments composed of flattened plates called lamallae. Blood flowing ...

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... and Polytrichopsida . Sphagnopsida don't have seta and the sporangium is carried by a pseudopodium - the short stalk originating in gametophyte. Operculum - in plants it is the cover of a sporangium. In higher bryophytes it's hidden under calyptra. Apophysis is a swelling present just beneath ...

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