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SOVA2 [1]
2 years ago
12

What invertebrates only live in salt water?

Biology
1 answer:
Step2247 [10]2 years ago
4 0

Answer:

echinoderms

Explanation:

echinoderms are a group of aquatic invertebrates but they are only found in salt water

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Where should the origin of the swim bladder be placed on the phylogenetic tree?
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Answer:

At the base of Actinopterygii

*This is a unique characteristic of this group.

Explanation:

A peculiar characteristic organ observed in ray-finned fish (as well as in Sarcopterygii, or lobe-finned fish) but not in cartilaginous fish like shark is the swim bladder.

This organ is often described to be a sac containing gas. It helps these set of fish adjust its buoyancy and its position in the water by regulating the concentration of gas present in it.

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The swim bladder is homologous to the lungs of tetrapods. Since they are formed in the same vein. Few fishes that have an open swim bladder employs it as a breathing organ.

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An older adult female patient has presented with a new onset of shortness of breath, and the patient's nurse practitioner has or
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1st correct answer gets brainliest! and 13 pts
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