Animals that feed milk to their young are classified as
What are mammals?
100
A living thing that has parents that are quite different from each other
What is a hybrid?
100
An animal's similar cells that have the same job or function
What is tissue?
100
An adaptation that allows an animal to look like its surroundings
What is camouflage?
100
Mollusks are invertebrates which would include these types of organisms
What are snails, clams, and octopuses?
200
One of the simplest kinds of animals is this
What is a sponge?
200
A word that means "different"
What is diversity?
200
An animal's group of tissues that work together
What is an organ?
200
An adaptation that allows an animal to look like something else
What is mimicry?
200
Arthropods are invertebrates which include these types of organisms
What are spiders, lobsters, and crabs?
300
An animal that breathes through lungs, has scales on its skin, and has leathery eggs is this
What is a reptile?
300
The passing of inherited traits from parents to offspring
What is heredity?
300
An animal's group of organs that work together
What is a system?
300
A bird's nest-building behavior is an example of this type of behavior
What is an inherited behavior?
300
Echnoderms are invertebrates which include this type of animal
What is a starfish?
400
There are more of this type of animal on earth than any other kind of animal
What is an arthropod?
400
Farmers may use this to produce hearty crops
What is crossbreeding?
400
An animal's mouth, stomach, and intestines make up this bodily system
What is the digestive system?
400
A dog that goes to the door when its owner picks up its leash is demonstrating this type of behavior
What is learned behavior?
400
The characteristics of an animal's cell structure, how cells are organized into tissues, how tissues are oganized into organs, and how organs are organized into systems determines this
What is how an animal is classified?
500
An animal that has a backbone is this
What is a vertebrate?
500
A duck's webbed feet are an example of this type of trait
What is an inherited trait?
500
Scientists divide all animals into two main groups based on the presence or absence of this
What is a backbone?
500
An offspring's physical traits would be a mixture of this which could make them healthier and live longer