Question

Out of these how mony mammals are without ear pinnae (whale bat kangaro dolphin parrot sea cow

Answer 1

answer is whale , dolphin , parrot , sea cow

Answer 2

ANSWER:

There are 4 mammals that are without ear pinnae. These are whale, dolphin, parrot and sea cow.

EXPLANATION:

The purpose of the ear pinnae is to collect sound and direct it to the ear canal. The ear pinnae basically amplify the sound and make sure that the sound is directed in the right manner so that it can be comprehended.

Mammals like cats, dogs and other land mammals, the ear pinnae are highly directional. For mammals like whale and dolphin, the ears are adapted to hear in the ocean or water. These mammals do not have ear pinnae but their body is adapted to hear sounds and stay alert.