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Life on Earth

Total questions: 37

Worksheet time: 42mins

Name
Class
Date
1.
Which of the following describes what the first life form resembled?
a)
Eukaryotes
b)
Plants
c)
Bacteria
d)
Fungi
2.
What gas was necessary for complex (eukaryotic) life to evolve?
a)
Carbon dioxide
b)
Oxygen
c)
Dihydrogen monoxide
d)
Methane
3.
During which eon did multicellular life evolve?
a)
Archean
b)
Hadean
c)
Proterozoic
d)
Phanerozoic
4.

What group of organisms replaced dinosaurs after their extinction?

a)

Insects

b)

Mammals

c)

Amphibians

d)

Squids

5.

The age of birds and mammals is the ___________ era.

a)

Paleozoic

b)

Mesozoic

c)

Cenozoic

6.

The first feathers were probably for __________.

a)

Flight

b)

Warmth

c)

Gliding

d)

Attracting mates

7.

When did birds evolve?

a)

Triassic

b)

Jurassic

c)

Cretaceous

d)

Cambrian

8.

Early mammals were ___________ and ___________.

a)

large, diurnal

b)

large, nocturnal

c)

small, nocturnal

d)

small, diurnal

9.

What were the first vertebrates to evolve flight?

a)

Pterodactyls

b)

Insects

c)

Birds

d)

Bats

10.

"A group of organisms which can interbreed to produce fertile offspring" is the definition for:

a)

Niche

b)

Species

c)

Habitat

d)

Carnivore

11.

What is the third main stage of speciation?

a)

natural selection

b)

Time

c)

mutation

d)

isolation

12.

What is a random change in an organisms genetic material called?

a)

natural selection

b)

mutation

c)

adaptations

d)

biological control

13.

What are the two main categories of mutagenic agents?

a)

chemical

b)

radiation

c)

advantageous

d)

disadvantageous

14.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
15.

On Earth, living things that can survive in extreme environments (similar to space) are called _____.

a)

astrophiles

b)

bibliophiles

c)

extremophiles

d)

heliophiles

e)

nyctophiles

16.

Mammals are a dominant group in which era?

a)

Cenozoic

b)

Mesozoic

c)

Paleozoic

d)

Cambrianozoic

17.

What era did the formation of the earth occur?

a)

Paleozoic

b)

Precambrian

c)

Cenozoic

d)

Cambrian

18.

How old do Paleontologists believe the Earth is?

a)

2019 years old

b)

3.6 billion years old

c)

4.6 billion years old

d)

4.6 million years old

19.

What type of event usually marks the end of an Era

a)

A Mass Extinction

b)

A Quinceanera

c)

An earthquake

d)

A Volcanic Eruption

20.

What are the four eras in order from OLDEST to NEWEST?

a)

Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic

b)

Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic

c)

Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian

d)

Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic

21.

What era did trilobites, fishes, and other marine organisms dominate?

a)

Precambrian

b)

Paleozoic

c)

Mesozoic

d)

Cenozoic

22.

Which era is the most recent, the one that we are currently in?

a)

Mesozoic

b)

Paleozoic

c)

Cenozoic

d)

Precambrian

23.

The dinosaurs and reptiles were dominant in which Era?

a)

Precambrian

b)

Mesozoic

c)

Paleozoic

d)

Cenozoic

24.

90% of Earth’s history occurred during which era?

a)

Precambrian

b)

Paleozoic

c)

Mesozoic

d)

Cenozoic

25.

At the end of this era, multi-cellular organisms like sponges, jellyfish and worms filled the oceans.

a)

Precambrian Era

b)

Paleozoic Era

c)

Mesozoic Era

d)

Cenozoic Era

26.
What is the Cenozoic Era also known as ?
a)
Age of Mammals
b)
Age of Plants
c)
Age of Cenozoic 
d)
Age of Birds 
27.
A scientist who studies fossils is called a what?
a)
Fossilologist
b)
Rock Hound
c)
Archeologist
d)
Paleontologist
28.
Known as the age of the mammals?
a)
Mesozoic Era
b)
Holocene Epoch
c)
Cenozoic Era
d)
Cambrian
29.

What do scientists think may have caused dinosaurs to become extinct?

a)

competition between animals

b)

climate change due to the asteroid hitting earth

c)

disappearance of prey

d)

competition from mammals

30.

Fossil lived the longest?

a)

plant

b)

Trilobite

c)

Ammonite

d)

bird

31.
Which type of life dominates the Precambrian Time?
a)
Dinosaurs
b)
Mammals
c)
Bacteria
d)
Humans
32.

What era was the Age of Fish and Amphebians

a)

Mesozoic

b)

Paleozoic

c)

Cenozoic

d)

Precambrian

33.

Age of bacteria

a)

Cenozoic

b)

Paleozoic

c)

Precambrian

d)

Mesozoic

34.
Particles get attracted towards one another due to universal force of
a)
Magnetism
b)
Electicity
c)
Nature
d)
Gravity
35.
First simple life forms like bacteria and algae appeared
a)
3500 MYA
b)
65MYA
c)
4600 MYA
d)
4.6MYA
36.
What does Paleozoic era mean?
a)
Ice Age
b)
Middle life period
c)
Recent life period
d)
Old Life period
37.
What does Mesozoic era mean?
a)
Middle life period
b)
Recent life period
c)
Old Life period
d)
Age of Fish

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