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Chapter 29: Q. 27 (page 827)

Explain why frogs are restricted to a moist environment.

Short Answer

Expert verified

A moist environment is required, as frog eggs lack a shell and dehydrate quickly in dry environments.

Step by step solution

01

Introduction

Frogs are amphibians that belong to the order Anura. Anurans are among the most diverse groups of vertebrates, with approximately 5,965 species that occur on all of the continents except Antarctica.

02

Explanation

Frog eggs are fertilized externally, and like other amphibians, frogs generally lay their eggs in moist environments. A moist environment is required as eggs lack a shell and thus dehydrate quickly in dry environments.

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Most popular questions from this chapter

Which of the following statements about common features of chordates is true?

a. The dorsal hollow nerve cord is part of the chordate central nervous system.

b. In vertebrate fishes, the pharyngeal slits become the gills.

c. Humans are not chordates because humans do not have a tail.

d. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.

Monotremes include:

a. kangaroos.

b. koalas.

c. bandicoots.

d. platypuses.

Squamata includes_______.

a. crocodiles and alligators

b. turtles

c. tuataras

d. lizards and snakes

What characteristics differentiate lizards and snakes?

5. Which group of invertebrates is most closely related to vertebrates?

a. cephalochordates

b. echinoderms

c. arthropods

d. urochordates
See all solutions

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