Select the total number of correct statement from the...

Select the total number of correct statement from the following: (1) Coelenterates have tentacles and bear cnidoblasts. (2) Ctenophores are marine animals with comb plates. (3) Annelids are metamerically segmented animals with a true coelom. (4) The echinoderm posses water vascular system. (5) Hemichordates are a small group of worm like marine animals characterized by cylindrical body with proboscis, collar and trunk. (a) 2 (b) 3 (c) 4 (d) 5

Select the total number of correct statement from the following:
(1) Coelenterates have tentacles and bear cnidoblasts.
(2) Ctenophores are marine animals with comb plates.
(3) Annelids are metamerically segmented animals with a true coelom.
(4) The echinoderm posses water vascular system.
(5) Hemichordates are a small group of worm like marine animals characterized by cylindrical body with proboscis, collar and trunk.
(a) 2
(b) 3
(c) 4
(d) 5

Key Concepts

Echinoderms

Echinoderms are a group of marine invertebrates known for their radial symmetry (in adults) and a unique water vascular system that aids in locomotion, feeding, and fluid transport. This hydraulic system works through a network of fluid-filled canals and tube feet.

Annelids

Annelids are segmented worms that exhibit metamerism, meaning their bodies are divided into repeated segments. They possess a true coelom—a body cavity formed within the mesoderm—that facilitates organ compartmentalization and effective movement.

Hemichordates

Hemichordates are small, deuterostomian marine animals that have a body plan divided into three distinct regions: the proboscis, collar, and trunk. This organization supports their worm-like shape and is associated with burrowing and feeding behaviors.

Cnidaria

Cnidarians, commonly known as coelenterates, are aquatic invertebrates characterized by the presence of specialized stinging cells called cnidocytes (which bear cnidoblasts) used for prey capture and defense. They typically have tentacles and a simple body plan with a radial symmetry.

Ctenophores

Ctenophores are marine invertebrates distinguished by the presence of rows of comb plates—groups of cilia used for locomotion. They possess a gelatinous body and have a distinct pattern of swimming that sets them apart from other marine groups.

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