General Biology 2: History of Life on Earth

Subject: Biology 2

Topic: History of Life on Earth

Difficulty: Hard

Questions: 5

Passing Score: 70%

If a geologist finds a rock layer containing fossils of the very first flowering plants
(angiosperms), which Era is she most likely looking at?

A: Paleozoic Era

B: Precambrian Era

C: Mesozoic Era

D: Hadean Era

The "Cambrian Explosion" is a famous event in Earth's history. Based on the geologic record,
why is it described this way?

A: It was a massive volcanic eruption that wiped out 90% of species.

B: It represents a relatively short time where most major animal groups first appeared.

C: It marked the first time the Earth's surface was covered in ice.

D: It was the moment the solar system emerged from a solar nebula.

During which Epoch did the earliest ancestors of the human family tree emerge from apelike
species?

A: Pleistocene

B: Holocene

C: Miocene

D: Paleocene

What piece of evidence led scientists in the 1800s to conclude that the Earth’s surface changes
significantly over time?

A: The discovery of ancient marine fossils in dry, landlocked areas.

B: The invention of recombinant DNA technology.

C: The observation of modern insects like bees.

D: The mass production of insulin in labs.

Why is the Devonian Period specifically referred to as the "Age of Fishes"?

A: It was the first time life moved from the ocean to land.

B: Because of the rapid proliferation of primitive marine and freshwater fish.

C: It was the period when whales first evolved.

D: It marked the extinction of all marine reptiles.

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