Q1. Hydra can move from one place to another by flexing the body and gripping the...

 

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Q1. Hydra can move from one place to another by flexing the body and gripping the substrate with the tentacles and then looping the body over the mouth to gain a new position. Explain exactly what mechanisms and principles are involved in this movement? The full answer to this question involves the hydrostatic skeleton formed by the gastrovascular cavity and contractile cells. Q2. What reasons can you think of that might limit this type of body form to aquatic systems? Q3. What factors may limit the upper body size in forms like this? Part of this answer derives from your observation of the living Hydra in moving water. Q4. Given the constraints of the rate at which oxygen can diffuse through tissue, what are the only two ways flatworms can become bigger? Q1. Hydra can move from one place to another by flexing the body and gripping the substrate with the tentacles and then looping the body over the mouth to gain a new position. Explain exactly what mechanisms and principles are involved in this movement? The full answer to this question involves the hydrostatic skeleton formed by the gastrovascular cavity and contractile cells. Q2. What reasons can you think of that might limit this type of body form to aquatic systems? Q3. What factors may limit the upper body size in forms like this? Part of this answer derives from your observation of the living Hydra in moving water. Q4. Given the constraints of the rate at which oxygen can diffuse through tissue, what are the only two ways flatworms can become bigger?

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Q1Hydras are cnidariansinhabit fresh water bodies remains attached to and hanging downwards from sub... View the full answer