7.Which of the following is an example of symbiosis? * 12 points
A. A sea anemone protects a clownfish, and the clownfish chases attackers away
from the sea anemone.
O B. Barnacles attached to the skin of a whale ride through the water gathering food.
C. A flea lives on a dog and feeds on its blood.
D. All of the other answer choices

The examples of symbiosis is all of the other answer choices. That is option D.

In an ecosystem there are alot of feeding relationships that exist between organisms of different species.

Symbiosis is defined as the feeding interaction between two different species.

There are different types of symbiotic feeding relationship between organisms which include:

Therefore, the examples of symbiosis is all of the other answer choices

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The relationship between the clownfish and the anemone, that protects it,  is an example of symbiosis, specifically mutualism.

Explanation:

Symbiosis or mutualism explains an interspecific relationship where two species benefit from each other.

Some anemone species are capable of harboring the clown fish, contributing to its protection and allowing it to feed and spawn.

The clownfish, on the other hand, attracts its predators to the anemone, where it dies from contact with the tentacles and serves as food for both species. Additionally, the clownfish's swimming contributes to the oxygenation of the anemone tentacles.

The other options do not correspond to symbiosis because:

   B. Barnacles do not represent any benefit for the whale, so there is no symbiosis.

    C. The relationship of the flea and the dog is parasitism, where the flea feeds on the dog's blood, and can produce harm.

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.