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

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

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

Animals can have up to a ______ opening digestive system

About what percent of animals known on Earth are invertebrates

What is the hard outer covering that arthropods have?

How many pairs of jointed legs do insects have?

How many pairs of jointed legs do arachnids have?

True or False: All animals have a line of symmetry

organism, such as a frog, toad, and salamander, that spends part of its life in water and part on land

structure, such as a leg or an arm, that extends from the central part of the body

True or false: there are two types of invertebrates that have a notochord

Annelids have _________ that make them different from other worms

True or False: mammals are the only animal that have fur covering their bodies.

Which of the following is NOT an invertebrate?

flexible, rod-shaped structure that supports the body of a developing chordate

Which type of invertebrate has no tissue?

The three major groups of fish are jaw-less, cartilaginous, and ______

small, flat plate that forms part of an animal’s external covering