Vocab

Question 1

Characteristics of all animals

Answer 1

• eukaryotic
• multicellular
• heterotrophic
• no cell wall

Question 2

Eukaryotic cells

Answer 2

contains a nucleus

Question 3

Symmetry

Answer 3

balanced arrangement of similar parts on either side of an point/axis

Question 4

Radial Symmetry

Answer 4

divided along a central point

Question 5

Bilateral Symmetry

Answer 5

divided along a central axis into equal halves

Question 6

Anterior

Answer 6

head end

Question 7

Posterior

Answer 7

rear end

Question 8

Ventral

Answer 8

belly end

Question 9

Dorsal

Answer 9

back end

Question 10

Segmentation

Answer 10

body parts grouped in sections (allow for complex, specialized organs)

Question 11

Appendages

Answer 11

protruding body parts that serve in locomotion, feading, etc. (i.e legs/arms)

Question 12

Endoskeleton

Answer 12

skeleton located inside the body

Question 13

Exoskeleton

Answer 13

skeleton located outside the body

Question 14

monoecious

Answer 14

having both male and female reproductive organs (hermaphrodite)

Question 15

Dioecious

Answer 15

having both male and female reproductive organs in separate individuals

Question 16

Coelom

Answer 16

fluid-filled body cavity in an embryo

Question 17

Acoelomate

Answer 17

w/out a body cavity

Question 18

Pseudocoelomate

Answer 18

body cavity that lacks a mesoderm lining

Question 19

Coelomate

Answer 19

w/a body cavity

Question 20

Trochophore larvae

Answer 20

small, translucent, free-swimming larva

Question 21

Endoderm

Answer 21

innermost layer of embryo (makes gut and internal organs)

Question 22

Mesoderm

Answer 22

middle layer of embryo (makes an animal triploblastic)

Question 23

Ectoderm

Answer 23

outermost layer of embryo (makes skin, nervous system, and sensory organs)

Question 24

Protostome

Answer 24

first opening becomes the mouth

Question 25

Deutrostome

Answer 25

first opening becomes the anus