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What does water bring in and take out as it flows through a sponge?
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- Water moving through a sponge is an active or passive process?Describe the water vascular system that seastars utilize for locomotion, respiration, and food capture. What is the name of the siege that regulates water flow between the organism and environment?Which cells contract to regulate the surface area of a sponge?
- Why do marine entities lack contractile vacuoles as compared to fresh water entities?Why do all the fresh water organisms have contractile vacuoles where as majority of marine organisms lack them?Graph: THE EFFICIENCY OF WATER PURIFICATION IN RELATION TO Purity of Water Exiting the Osculum Which of the following factors, when used to label the horizontal axis of the accompanying graph, would directly affect the Slope of the graph line? number of spicules per sponge rate of cribrostatin synthesis (molecules/unit time) number of choanocytes per sponge spongin concentration (gm/unit volume) number of pores per sponge O O O OO
- Explain how the system of pores operate in a typical sponge.What is the advantage of having a planktonic larval stage for benthic animals such as the sea urchin?The following diagrams are longitudinal cross-sections of a sponge (Grantia sp.). Which diagram correctly represents the flow of water through the sponge? A B MA