One Hypothesis Suggests That the Cambrian Explosion Was Caused by the Rise

question 28

Multiple Choice

One hypothesis suggests that the Cambrian explosion was caused by the rise of predator-prey relationships. This hypothesis is best supported by an increased incidence of which of the following fossil traces?

• A) worm burrows
• B) larger animals
• C) organic material
• D) hard parts

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Definitions:

Gametes

Gametes are the reproductive cells (sperm in males and eggs in females) that contain half the genetic information of an organism and can combine to form a new organism.

Reproductive System

A biological system within an organism which works to facilitate reproduction, consisting of organs and structures that enable the production of offspring.

Gametes

Reproductive cells (sperm in males and eggs in females) that carry half the genetic information of an individual and can unite with another to form a new organism.

Uterine Tube

Also known as the fallopian tube, it is a part of the female reproductive system that transports the ova from the ovary to the uterus.