Homework Answers
Sypha are calcareous sponge belonging to the family Sycettidae. Sponges are marine invertebrates with a jellylike mesohyl sandwiched between two layers of cells
Sponges belong to the phylum Porifera ("pore bearers"), while hydra are members of the phylum Cnidaria.
Hydras are predatory animals, whereas sponges are filter feeders.
Sponges are complex aggregations of specialized cells, and these cells do not form true tissues and organs. Sponges are among the structurally simplest multicellular organisms. Hydras, on the other hand, are organized at the tissue level, and thus they are able to perform functions, such as respong to external stimuli and engulf prey.
Hydras are radially symmetrical, while sponges are unsymmetrical.
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What major differences are there between Scypha and Hydra body
forms? List and describe them.
scussion...
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