Question

Star Fish belongs to

• A. asteriodea
• B. ophiuroidea
• C. holothuroidea
• D. crinodiea.

Answer 1

The Correct Option is A

To solve the question regarding the classification of the Star Fish, we need to look at the taxonomy of echinoderms. The question provides several options related to the classes within the phylum Echinodermata.

1. The Star Fish is commonly known as a member of the class Asteroidea. This class is characterized by radial symmetry and typically five arms radiating from a central disc.
2. Let's evaluate the options provided:
   • Asteroidea: This is the correct class to which Star Fishes (sea stars) belong. They are known for their star-like shape and ability to regenerate lost arms.
   • Ophiuroidea: This class includes brittle stars and basket stars. While they are similar to star fishes, they have a distinct separation between their central body disc and their arms, unlike star fishes.
   • Holothuroidea: This class consists of sea cucumbers, which have a more elongated body shape and do not resemble star fishes.
   • Crinoidea: This class includes sea lilies and feather stars. These organisms have feathery arms and a stalk for attachment, making them quite different from star fishes.
3. Thus, the correct answer is Asteroidea, as it accurately describes the class to which Star Fishes belong.

Therefore, the Star Fish belongs to the class Asteroidea, which is evident from its morphological characteristics and common classification within Echinoderms.