Chapter 9 Introduction to animals study guide finals Flashcards
(20 cards)
Which vertebrate group lays eggs and has feathers?
bird
Which of these animals had radial symmetry?
a sea anemone
An animal that has a backbone is called a
Vertebrate
What is a characteristic of many invertebrate groups?
exoskeleton
Major functions of animals include obtaining food and oxygen, keeping internal conditions stable, movement, and
reproduction
if an animal is an ectotherm, it has
a body that does not produce much internal heat.
at some point in their lives, all chordates have a flexible supporting rod in their backs called a
notochord
when the temperature of the environment changes, the body temperature of a reptile
changes
what does the backbone surround and protect in a vertebrate?
the spinal cord
which of the following is a charecterisitc shared by all animals?
their bodies have many cells.
Mammals and are two groups of vertebrates that are endotherms.
birds
An animal may have radial symmetry, bilateral symmetry, or symmetry
no symmetry
An ectotherm’s body temperature changes depending on the temperature of its
environment
animals in the mammal group called allow their young to develop in a pouch on their mother’s body
marsupials
classifying animals involves comparing their, a chemical that controls an organisms’s inherited characteristics.
DNA
a type of worm with many linked sections is a flatworm.
false, segmented worms
the nerve cord is a flexible rod that supports a chordates’s back
false, notochord
if only one line can divide an object into mirror image halves, the object is said to have radial symmetry.
false, bilateral
animals must maintain a stable environment within their bodies to survive.
true
most animals are invertebrates.
true
