Respuesta :
The branch of science which deals with the study of a living being is called biology.
The options are missing in the question.
The species which crawls down in land is called reptiles. An example of reptiles species is a crocodile, snakes, and etc
As the option is missing, then, in my opinion, the feature that is not necessary for reptiles is the tympanic membrane, they do not listen.
Hence, the correct option is the tympanic membrane.
For more information, refer to the link:-
https://brainly.com/question/25026730
