Scientists have noted that marine invertebrates tend to be osmoconformers, while freshwater invertebrates tend to be osmoregulators. Suggest an explanation for this phenomenon.

Video transcript

Hey everyone, let's take a look at this question together. The animals that do not adjust their internal salt concentration according to the external environment are called osmo conformers, which of the following are osmo conformers. So you can probably already tell the answer based on the answer choices listed below. But let's talk about this word right here for a second. Osmo conformers, which we've talked about in previous content. And you all know that this has to do with an organism that maintains the same concentration in their cell as is outside of the cell. So they maintain that concentration. And another term for this would be that they are isotonic to their environment. So the concentration within their cells is equal or the same as outside of their cells. So the only option here is answer choice a sharks because sharks keep that same concentration of salt within their cells as is within the ocean that they exist in. And so they are the correct answer. They also have rectal glands that help with that regulation so that they can keep the same concentration inside as is outside. I hope you found this video to be helpful. Thank you and goodbye.