Animal Development & Body Plans

The very first cell of a new animal is the

• Egg

• Gamete

• Sperm

• Zygote

The condition of having similar parts regularly arranged around a central axis.

• Asymmetry

• Radial Symmetry

• Bilateral Symmetry

Involves the division of the animal through a sagittal plane, resulting in two mirror-image, right and left halves

• Asymmetry

• Radial Symmetry

• Bilateral Symmetry

If an animal has a head and a tail, it has _____ symmetry.

• It does not have symmetry.

• bilateral

• radial

• super duper cool

Which type of symmetry does this organism have?

• Asymmetrical

• Radial Symmetry

• Bilateral Symmetry

What is an organ?

• a group of similar cells

• a group of specialized cells

• a group of organs

• a group of tissues

Tags

NGSS.HS-LS1-2

The frontal plane separates the body into...

• dorsal and ventral

• medial and lateral

• proximal and distal

• cranial and caudal

Which term of direction refers to the head end?

• Anterior
• Posterior
• Dorsal
• Ventral

The embryo layer that forms the skin and nervous tissue is 

• endoderm

• ectoderm

• mesoderm

• protostome

Tags

NGSS.HS-LS1-4

The animal's digestive tract forms from the

• endoderm

• extoderm

• mesoderm

• protostome

Tags

NGSS.HS-LS1-4