Possession of pinna is a characteristic feature of

Explanation

This question is asking about a characteristic feature called pinna. The question is asking which group of animals possesses pinna. Pinna is the external part of the ear that is used to collect sound. It's also known as the auricle. Option A states that mammals possess pinna, and this is correct. Mammals are a group of animals that have hair or fur, mammary glands for feeding their young, and three middle ear bones. Pinna is a characteristic feature of mammals, and it helps them to collect sound and locate the direction of the sound. Option B states that reptiles possess pinna, but this is incorrect. Reptiles are a group of animals that are characterized by their scaly skin and cold-blooded nature. Reptiles do not have pinna as a characteristic feature. Option C states that fishes possess pinna, but this is incorrect. Fishes are aquatic animals that breathe through their gills, and they don't possess pinna as a characteristic feature. Option D states that amphibians possess pinna, but this is incorrect. Amphibians are a group of animals that live both on land and in water, and they don't possess pinna as a characteristic feature. Option E states that all of the above possess pinna, but this is incorrect. Mammals are the only group of animals that possess pinna as a characteristic feature. In summary, the correct answer to this question is Option A: Mammals. Mammals possess pinna, which is a characteristic feature that helps them to collect sound and locate the direction of the sound.