Onvoluta worms hatch in early spring. They crawl about in the mud feeding on algae, which find their way into the skin of the worms. There they prosper as they worms feed on the sun-warmed surface mud.

The worms become greener and greener as they mature. Gradually their mouths seal shut, leaving only an internal garden of algae to provide them with food. As winter approaches, their food supply is exhausted, and the worms grow pale again. They lay their eggs in the mud just before they starve to death.

How do you think both worms and algae benefit from this relationship? WHY??

Please see the answer below.

Explanation:

The worm benefits from the algae because the algae keeps providing food for the worm through continuous photosynthesis.In other words, the algae act as a source of food for the worm and keeps them alive.

The algae on the other hand benefit from the worm by getting adequate sunlight for photosynthesis. Through photosynthesis, algae can obtain all the necessary food for their metabolism. In addition, the algae might gain a kind of protection from predators by sheltering in the skin of the worm.

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