what grade of body organisation does Cnidarians have?
Answers
Answer:
They does not have any backbones
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Answer:
morphology of cnidarians
"Bell-shaped" (or medusoid) to start. The body of a jellyfish allows it to propel itself using muscle contractions - or float along water currents. Similar to sponges, cnidarians are diploblasts, meaning that they develop from two basic germ (cell) layers: an ectoderm, or outer layer, and an endoderm, or inner layer. Between the ectoderm, which contains the cnidocysts, and the endoderm there is a non-cellular substance called the mesoglea. The mesoglea is a gelatinous matrix that contains fibers made up of the protein collagen. There are usually cells loosely scattered throughout the mesoglea but not in a defined layer. The basic body plan of all cnidarians consists of the two cell layers enclosing a digestive cavity.