Introduction to Animals Vocabulary

In animals, the outer layer of embryonic tissue

from which the skin and nervous system develop.

• Endoderm

• Ectoderm

• Mesoderm

• Aymmetrical

Tags

NGSS.MS-LS4-3

Arrangement of body parts so there are distinct

left and right halves that mirror each other.

• Radial Symmetry

• Bilateral Symmetry

• Gill

• Blastula

Animal with a body cavity located entirely within

the mesoderm.

• Coelom

• Acoelomate

• Coelomate

• Gill

Extremely thin projection of tissue rich blood

cells that is the site of gas exchange in aquatic

organisms.

• Respiration

• Gill

• Blastula

• Hydrostatic Skeleton

Hollow ball of cells that gives rise to all the

tissues and organs of an adult body.

• Ectoderm

• Coelom

• Blastula

• Gill

Tags

NGSS.MS-LS4-3

Simultaneous uptake of oxygen and release of

carbon dioxide.

• Gill

• Respiration

• Coelom

• Endoderm

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Irregular in shape.

• Symmatrial

• Asymmetrical

• Radial

• Bilateral

Hard external covering of some invertebrates.

• Endoskeleton

• Exoskeleton

• Gill

• Mesoderm

An internal skeleton composed of a hard material.

• Exoskeleton

• Endoskeleton

• Gill

• Endoderm

Middle layer of embryonic tissue in animals from

which the skeleton and muscles develop.

• Endoderm

• Mesoderm

• Ectoderm

• Blastula

Tags

NGSS.MS-LS4-3