Animals 1.1 What Is an Animal?

by eating other organisms

How do animals obtain food?

1) obtain food and oxygen 2) keep internal conditions stable 3) move 4) reproduce

What are the 4 major functions of animals?

1) body structure 2) way an animal develops 3) DNA

What do biologists consider when they classify an animal?

food

What gives animals raw material for growth and energy?

oxygen

What releases the energy from food?

1) survival 2) reproduction

Why is movement important to animals?

adaptation

a characteristic that helps an organism survive or reproduce in its environment

tissue

a group of simular cells that together preform a spacific function

vertebrate

an animal that has a backbone

invertebrate

an animal that has no backbone

cell

basic unit of structure and function in living things

phylum

one of about 35 major groups into which bilogists classify members of the animal kingdom

digestion

process of breaking down food in an animal

organ

structure that is composed of different kinds of tissues

fertilization

the joining of an egg cell and a sperm cell

sexual reproduction

the process by which a new organism develops from the joining of two sex cells

asexual reproduction

the process by which a single organism produces a new organism identical to itself