Certain epithelial cells around ostia in a sponge can contract, closing the tiny pores in the sponge's body. Why are these epithelial cells important?Multiple choice question.These cells are important for maintaining the water balance of the sponge.These cell close the ostia when there is too little oxygen in the water, protecting the sponge body from the accumulation of CO2.When ostia are closed the delicate inner cells of the sponge are protected against potentially harmful substances.
Question
Certain epithelial cells around ostia in a sponge can contract, closing the tiny pores in the sponge's body. Why are these epithelial cells important?Multiple choice question.These cells are important for maintaining the water balance of the sponge.These cell close the ostia when there is too little oxygen in the water, protecting the sponge body from the accumulation of CO2.When ostia are closed the delicate inner cells of the sponge are protected against potentially harmful substances.
Solution
The epithelial cells around the ostia in a sponge play a crucial role in the sponge's survival and overall health. Here are the reasons why these cells are important:
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Maintaining Water Balance: These cells help in maintaining the water balance of the sponge. Sponges are filter feeders that draw in water through their ostia (tiny pores) to extract nutrients. The ability to close these pores allows the sponge to control the amount of water it takes in, thus maintaining its water balance.
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Oxygen and CO2 Regulation: These cells close the ostia when there is too little oxygen in the water. This protects the sponge body from the accumulation of CO2. Sponges need oxygen to survive, and too much CO2 can be harmful to them. By closing the ostia, these cells ensure that the sponge does not take in water with low oxygen levels or high CO2 levels.
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Protection Against Harmful Substances: When the ostia are closed, the delicate inner cells of the sponge are protected against potentially harmful substances. The water in the sponge's environment can contain pollutants or toxins. By closing the ostia, these cells prevent these harmful substances from entering the sponge's body.
Therefore, these epithelial cells play a vital role in the sponge's survival and health by regulating its water intake, oxygen and CO2 levels, and protecting it from harmful substances.
Similar Questions
In sponges, what is the function of the tiny pores in the body known as ostia?Multiple choice question.They allow water to enter the channels of the body.The main function of ostia is to allow sperm cells to enter the body of a spongeSponges are filter-feeders and ostia act as their food-collecting filters.Water loaded with wastes can exit the sponge through the ostia.
What are the flagellated cells that line the internal cavity of a sponge and help water flow through the ostia called?Multiple choice question.Epithelial cellsChoanocytesAmoebocytesSpiculesCnidocytes
What is the function of choanocytes in sponges?Multiple choice question.They are small openings in the body of the sponges, through which water carrying oxygen and food enters the sponge.They act as a protecting layer around the body of the sponge, as they line its outer surface.They are specialized cells that assist in the circulation of water and the capture and digestion of food particles.They secrete needles of calcium carbonate or silica known as spicules.
What type of cells surround the body of a sponge?Multiple choice question.SpiculesEpithelial cellsChoanocytesAmoebocytes
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
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