History of Life on Earth & Speciation Test Review

How old is Earth estimated to be?

• 3.5 billion years

• 4.6 billion years

• 4 billion years

• 2 billion years

How is life on Earth impacted by changing climate and geology (such as moving continents)?

• Life must evolve to adapt to Earth's changes or go extinct

• Life may evolve due to Earth's changes but do not have to

• Earth's changes do not impact how life evolves

• Earth's changes always cause extinctions

Where did the oxygen found in Earth's atmosphere and oceans come from. Select 2 correct answers.

• All eukaryotic cells

• Photosynthetic prokarotes

• Plants

• All prokaryotic cells

Evidence supports that why type of life originated first on Earth?

• Humans

• Prokaryotes

• Eukaryotes

• Multicellular life

What was the purpose of the experiment in the diagram?

• To show how oxygen was released into the atmosphere

• To show how organic compounds could form in ancient Earth

• To show how eukaryotic organisms could form

• To show how prokarytoic organisms could form

Tags

NGSS.HS-LS1-6

What theory is used to explain how eukaryotic organisms formed through a symbiotic relationship between ancient prokaryotes?

• RNA World Hypothesis

• Theory of Endosymbiosis

• Theory of Natural Selection

• Theory of Evolution

Tags

NGSS.MS-LS4-2

What do scientist use as their primary source of evidence for how life evolved on Earth millions of years ago?

• Fossil Record

• DNA from ancient organisms

• Ice Samples

• Life specimens

Which of the following best explain background extinction?

• Slow and steady die out of species

• Large numbers of species die out in a short period of time

• Ecosystems and food webs are destroyed

• Occurs due to catastrophic events

When large numbers of species die out in a short period of geologic time (2.8 million years or less) that causes ecosystems to be destroyed, what has occurred?

• Background Extinction

• Gradualism

• Mass Extinction

• Endosymbiosis

Tags

NGSS.HS-LS4-5

What type of evolutionary rate of change in a species is depicted in the diagram at letter A?

• Gradualism

• Punctuated Equillibrium

• Endosymbiosis

• Mass Extinction