Write short notes on the
salient features of anthozoa
.
Answers
Anthozoans are exclusively marine, polypoid cnidarians. They include the familiar sea anemones, and other anemone-like groups with skeletons (such as the "stony" scleractinian corals) and without skeletons (such as tube anemones), as well as sea pens, sea fans, blue coral, and black coral.
(1) Anthozoans are commonly referred to as sea anemones.
(2) Anthozoa includes sea anemones, corals, sea pens.
(3) All are marine forms. These are solitary or colonial.
(4) They are sedentary and only polypoid inform.
(5) Coelenteron is divided into several compartments by vertical septa called mesenteries.
(6) Mesoglea contains connective tissue.
(7) Cnidocytes occur both in the ectoderm and endoderm and is cellular as contains amoebocytes.
(8) Germ cells are derived from the endoderm.
Eg: Adamsia (sea anemone), Gorgonia(sea fan), Pennatual (sea pen).
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