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Chapter 29: Q. 31 (page 827)

What characteristics differentiate lizards and snakes?

Short Answer

Expert verified

Lizards differ from snakes by having eyelids, external ears, and limbs.

Step by step solution

01

Introduction

  • Lizards and snakes belong to the order Squamata of reptiles.
  • The order Squamata is the largest of the reptiles.
  • Lizards and snakes are most closely related to tuataras, both groups having evolved from a lepidosaurian ancestor. Both are found on all continents except Antarctica.
02

Explanation

Most lizards differ from snakes by having four limbs, although these have been variously lost or significantly reduced in at least 60 lineages. Snakes lack eyelids and external ears, which are present in lizards.

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