Animal Classification Review

animal that does not have a backbone

• Vertebrate

• Invertebrate

• Notochord

• Exoskeleton

body organization that cannot be divided into any two parts that are nearly mirror images of each other

• Radial Symmetry

• Bilateral Symmetry

• Asymmetry

body organization that can be divided into two parts that are nearly mirror images of each other anywhere through the central axis

• Bilateral Symmetry

• Radial Symmetry

• Asymmetry

 body organization that can be divided into two parts that are nearly mirror images of each other

• Bilateral Symmetry

• Radial Symmetry

• Asymmetry

Animals can have up to a ______ opening digestive system

• 1

• 2

• 3

• 4

About what percent of animals known on Earth are invertebrates

• 50%

• 10%

• 5%

• 95%

What is the hard outer covering that arthropods have?

• Echinoderm

• Scales

• Exoskeleton

• Cuticle

How many pairs of jointed legs do insects have?

• 1

• 2

• 3

• 4

How many pairs of jointed legs do arachnids have?

• 1

• 2

• 3

• 4

True or False: All animals have a line of symmetry

• True

• False