How does a sponge obtain food and oxygen and dispose of wastes?Multiple choice question.with a one-way digestive tract that has a mouth at one end and an anus at the other endusing a gastrovascular cavity that brings nutrients in and expels wastes out of the same openingdrawing water in through numerous pores in the body wall and out a hole at the toppumping water in across gills and exchanging gases and nutrients with water

Identify which option best explains why sponges don't need body systems.Only some cells need oxygen and nutrients and to dispose of waste, and they are located where they can do this directly with sea waterAll the body cells are close enough to sea water to get oxygen and nutrients and dispose of wastes directlyThe body cells of sponges are specially adapted so they do not need oxygen or nutrients or create wastesSponges are too small to have body systemsI'm not sure

A sponge's body is perforated by many ______, through which water flows.

Sponges feed largely onMultiple choice question.detritus found in the water.bacteria found in the water.nematodes found in the water.rotifers found in the water.plants found in the water.

Which of the following statements about extracellular digestion is NOT true?Multiple choice question.It is the main method of digestion used by sponges.It allows ingestion of larger food particles than intracellular digestion.It is employed by cnidarians.It requires a gastrovascular cavity.

What term refers to the opening at the top of a sponge, through which water exits?Multiple choice question.AnusOstiumChoanocyteOsculum