Lab Exam

Question 1

Precambrian Era/Time Period

Answer 1

4,750-630.

Question 2

Why do you read a geologic timescale from the bottom up to the top.

Answer 2

Because bottom to top indicates evolution/advancement of lifeforms.

Question 3

The first flowering plants occurred during what geologic era/time?

Answer 3

Mesozoic & Jurassic Era(199.6-145.5 Million Years Ago)

Question 4

What animals were diversifying during the Carboniferous period?

Answer 4

Amphibians.

Question 5

During which period/epoch did primates appear?

Answer 5

Tertiary/Paleocone.

Question 6

During which period/epoch did homonoids appear?

Answer 6

Tertiary/Pliocene.

Question 7

Why wouldn’t we expect to find humans and dinosaur fossils together in rocks dated similarly?

Answer 7

Because humans and dinosaurs didn’t exist in the same geologic time period.

Question 8

Supraorbital Ridge

Answer 8

Chimp: Thick/More Pronounced
Human: Thinner/Less Pronounced

Question 9

Saggital Crest

Answer 9

Chimp: Present
Human: Not Present

Question 10

Slope of Frontal Bone

Answer 10

Chimp: Ridges/Mountainous
Human: Smooth/Rounded

Question 11

Teeth

Answer 11

Chimp: Large/Sharp
Human: Smaller/Suited To Mashing

Question 12

Chin

Answer 12

Chimp: Larger
Human: Smaller

Question 13

What are animals that lack a backbone called?

Answer 13

Invertebrates.

Question 14

Water enters a sponge through ________ in the body wall?

Answer 14

Pores.

Question 15

Animals with a body cavity have a ________?

Answer 15

Coelem.

Question 16

What type of gametes does a hermaphroditic animal produce?

Answer 16

Male & Female.

Question 17

What do the cnidocytes of cnidarians contain?

Answer 17

Spine,Bulb, & Filament.

Question 18

A nerve net is characteristic of what group of animals?

Answer 18

Cnidarians.