EVERYDAY SCIENCE

SCIENCE

ZOOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which class of Cnidarians contains anemones and most corals?

A	Scyphozoa
B	Hydrozoa
C	Anthozoa
D	Cubozoa

Explanation:

Detailed explanation-1: -The class Anthozoa (under the phylum Cnidaria) includes corals, anemones, sea pens and seafans. Anthozoa consists of 10 orders and thousands of species.

Detailed explanation-2: -Subclass Hexacorallia (= Zoantharia) of cnidarian class Anthozoa currently contains six orders: Actiniaria (sea anemones), Antipatharia (black corals), Ceriantharia (tube anemones), Scleractinia (stony corals), Corallimorpharia (corallimorpharians), and Zoanthidea (zoanthids).

Detailed explanation-3: -Key Points. Anthozoans include sea anemones, sea pens, and corals. The pharynx of anthozoans (ingesting as well as egesting food) leads to the gastrovascular cavity, which is divided by mesenteries.

Detailed explanation-4: -Anthozoans include sea anemones, a variety of corals, sea fans, and sea pens.

Detailed explanation-5: -Hydrozoa. The class hydrozoa is the most diverse class of cnidarians and includes siphonophores, hydroids, fire corals, and many free-swimming medusae species.

There is 1 question to complete.