51. Sea hare is a/an (1) mollusc (2) annelid (3) mammal (4) arthropod
Answer (1)
The correct answer is (1) mollusc.
A sea hare is a type of marine organism belonging to the class Gastropoda, which is part of the larger phylum Mollusca. Mollusks are a diverse group of invertebrates, and they include well-known species like snails, clams, and squids.
Sea hares are known for their soft bodies and are often found in shallow waters, feeding on algae. They have a distinctive shape with a head that resembles that of a hare, which is where they derive their common name from. Sea hares are also noted for their ability to squirt a purple ink as a defense mechanism against predators.
In contrast, the other options in the question represent different phyla or classes. Annelids are segmented worms, mammals are warm-blooded vertebrates with hair or fur, and arthropods are invertebrates with exoskeletons, such as insects and crustaceans.
By understanding these classifications, we can see how scientists organize living organisms based on shared characteristics, which helps in studying their evolution, ecology, and behavior.
