Lab 8 - Germ Layers

Question 1

What type of symmetry do diploblastic animals have?

Answer 1

Radial symmetry.

Question 2

What does diploblastic mean?

Answer 2

Having two germ layers: ectoderm and endoderm.

Question 3

What type of symmetry do triploblastic animals have?

Answer 3

Bilateral symmetry (Bilateria).

Question 4

What does triploblastic mean?

Answer 4

Having three germ layers: ectoderm, endoderm, and mesoderm.

Question 5

When do the germ layers form during development?

Answer 5

During gastrulation.

Question 6

Which germ layers do vertebrates (Bilateria) have?

Answer 6

Ectoderm, endoderm, and mesoderm.

Question 7

What does the mesoderm allow that diploblastic animals lack?

Answer 7

Development of complex organs and muscle layers.

Question 8

Ectoderm develops into:

Answer 8

Epidermis

Question 9

Endoderm develops into:

Answer 9

Pancreas

Question 10

Mesoderm develops into:

Answer 10

Muscle