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Question 1

Metamorphosis

Answer 1

Incomplete - stages look similar

Complete - distinct stages

Question 2

Cleavage

Answer 2

Creating more cells

Two patterns: Spiral (misaligned) and radial (aligned)

Question 3

Gastrulation

Answer 3

Early formation of organ cavities
“archenteron” - primitive gut

Question 4

Ectoderm

Answer 4

Outer layer
“skin cells or neurons”

Question 5

Mesoderm

Answer 5

Middle layer
“muscle cells”

Question 6

Endoderm

Answer 6

Internal layer
“lungs or digestive tract”

Question 7

Evolution of Animal body plan

Answer 7

1. Symmetry (radial/bilateral)
2. Tissues and Body organization
3. Body cavity (coelom)
4. Embryonic development
5. Segmentation (repeated body units)
6. Digestive tract

Question 8

Radial

Answer 8

Can divide up like pie
Each “slice” is similar

Question 9

Bilateral

Answer 9

Anterior/Posterior and Ventral/Dorsal present

Question 10

Cephalization

Answer 10

Well defined head and has nervous system

Question 11

Sagittal

Answer 11

Gives bilateral symmetry down middle

Question 12

Traverse

Answer 12

“Cross section” with horizontal cut

Question 13

Coronal/Frontal

Answer 13

“cross section” with vertical cut

Question 14

Embryonic tissues

Answer 14

Monoblastic (one layer)
Diploblastic (two layers)
Triploblastic (All three layers endo, meso, ecto)

Question 15

Acoelomate

Answer 15

No coelom

Question 16

Pseudocoelomate

Answer 16

False coelom (fluid filled instead)

Question 17

Eucoelomate

Answer 17

True coelom