Cambrian Explosion #13

Question 1

How was ocean life in the Ediacaran?

Answer 1

Tubular & sessile, banished at the start of the Cambrian, made of repeating segments, soft-bodied, very simple & lacking important features

Question 2

What is the importance of sensory captivity?

Answer 2

If organisms move they need to have sensory captivity

Question 3

Describe the Ediacaran organisms complex skeletons?

Answer 3

radial, soft-bodied & lack sensory captivity

Question 4

Where was the metazoon first diversified?

Answer 4

In water

Question 5

What is the importance of Anomalocaris (aka - weird shrimp) in the diversification of animals?

Answer 5

The first apex predator, throughout early fossils, came from separate organisms. Trapped & guillotined pray

Question 6

How is our data biased to the Cambrian Explosion?

Answer 6

Data is incomplete regional or only specific organisms

Question 7

When was the end of the Cambrian period?

Answer 7

Camrain Ordovician extinction event

Question 8

What are the 3 groups that hypothesize the occurrence of the Cambrian Explosion?

Answer 8

Ecological, genetic & developmental evolutionary

Question 9

What is the relative timing of important events in the history of life?

Answer 9

eon (3)
era (10)
period (22)
epoch (37)

Question 10

When was the Cambrian period?

Answer 10

540-500 million years