Meandrina is the generic name of which Coelenterata animal having soft tube-shaped bodies that live together in large groups?

Correct option is A

The correct answer is (a) Brain coral.
 Meandrina: The generic name for brain coral.
 Brain Coral: Named for its resemblance to a human brain due to its grooved and meandering surface patterns.
 Coelenterata (Cnidaria): Brain corals belong to this phylum, which includes animals with a simple body plan featuring a single opening and specialized cells called cnidocytes.
 Habitat: Found in shallow warm-water coral reefs.
 Structure: Brain corals are hard corals with calcium carbonate skeletons, providing structure and habitat for various marine organisms.
 Symbiosis: Often have a symbiotic relationship with zooxanthellae, photosynthetic algae that live within their tissues, aiding in nutrient production through photosynthesis.