5/6 Science - Ch. 9 Lesson 1 - What are animals?

adaptation

An inherited trait that increases an organism's chances of surviving and reproducing in its environment is called a what?

imprinting

Baby geese learning to follow their mother soon after birth is a learned behavior known as what?

nucleus

Each animal and plant cell have this structure. What is the structure?

zygote

Each animal begins as a fertilized egg. This is called what?

external

Fertilization that occurs in the water is what type of fertilization?

internal

Fertilization that occurs inside the female is what type of fertilization?

closed

In this type of circulatory system, a heart or hearts pump blood through a system of vessels.

open

In this type of circulatory system, a heart pumps blood into open spaces around the organism's organs.

nerve

Only animals have this type of cells.

family tree

Relationships among and within generations of a family are shown in a what?

kingdom

The second level of taxonomy consists of the _______ taxons.

instincts

These are behaviors that animals are born with.

taxons

These are groups of living things that have certain traits in common.

domains

These are the biggest groups in taxonomy.

symmetry

This describes the way in which an animal's body parts are arranged.

taxonomy

This is a system that groups living things into level called taxons.

radial

This is a type of symmetry in which an organism can be divided into two parts that are nearly mirror images of each other anywhere through its central axis.

bilateral

This is a type of symmetry in which an organism can be divided into two parts that are nearly mirror images of each other.

asymmetry

This is a type of symmetry in which an organism cannot be divided into any two parts that are nearly mirror images.

multicellular

This is an organism that is made up of more than one cell.

hydrostatic

This type of skeleton has a fluid-filled internal cavity surrounded by muscle tissue.

exoskeleton

This type of skeleton is a thick, hard outer covering that protects soft internal structures.

endoskeleton

This type of skeleton is an internal rigid framework. Humans have this type of skeleton.

zoo

This word comes from the Greek word zoion, which means "living being" or "animals."

food

What do animals get energy from?