NEET BIOLOGY

Detailed explanation-1: -Among invertebrates, a sense of hearing has been described only in arthropods. Except for a few species of Crustacea, members of the Insecta are the only invertebrates known to both produce and receive airborne sounds, and to use airborne acoustic signaling to mediate behavior.

Detailed explanation-2: -Spiders don’t have ears-generally a prerequisite for hearing. So, despite the vibration-sensing hairs and receptors on most arachnids’ legs, scientists long thought spiders couldn’t hear sound as it traveled through the air, but instead felt vibrations through surfaces.

Detailed explanation-3: -Some animals like birds, reptiles, insects, amphibians do not have an external ear. These animals have funnel-shaped ears which help in processing the sound but lack external ears. So, we can say that birds, crocodiles, snakes, lizards do not have external ears.

Detailed explanation-4: -Two types of ears are seen among insects, antennal and tympanal ears. Both respond to airborne sounds but in different ways.