Chapter 13 Flashcard Study Guide

Front

Which animal has a two-chambered heart?

Back

Shark has a two-chambered heart, which is typical for fish.

Front

What does ectothermic mean?

Back

Ectothermic animals cannot internally regulate their body temperature; they rely on external sources.

Front

What organ do young amphibians have that adults usually do not?

Back

Young amphibians have gills, which they lose as they mature into adults.

Front

True or False: In a fish’s gills, oxygenated blood becomes deoxygenated.

Back

False. In a fish's gills, deoxygenated blood becomes oxygenated.

Front

Which animal's skeleton is made of cartilage?

Back

Shark's skeleton is made of cartilage, unlike bony fish.

Front

What is the function of gills in fish?

Back

Gills allow fish to extract oxygen from water.

Front

Define endothermic animals.

Back

Endothermic animals can regulate their body temperature internally, such as mammals and birds.

Front

What is cartilage?

Back

Cartilage is a flexible connective tissue found in various parts of the body, including the skeleton of sharks.

Front

How do ectothermic animals regulate their body temperature?

Back

Ectothermic animals regulate their body temperature by basking in the sun or seeking shade.

Front

What is the difference between a two-chambered heart and a three-chambered heart?

Back

A two-chambered heart has one atrium and one ventricle, while a three-chambered heart has two atria and one ventricle.