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Extinction

Total questions: 20

Worksheet time: 27mins

Name
Class
Date
1.

When a plant or animal becomes extinct, it is gone _______.

a)

forever

b)

until next week

c)

for 5 years

d)

to sleep

2.
What word do we use to describe a species which has no members still living?
a)
endangered
b)
extinct
3.

The current extinction event is being caused by

a)

a meteor strike.

b)

an alien invasion.

c)

a massive volcanic eruption.

d)

human activities.

4.
Humans are causing extiction in which ways?
a)
By over hunting animals for food or products.
b)
By destroying the natural habitat of species.
c)
By polluting the environments of the world.
d)
All of the above.
5.

Species that are in danger of becoming extinct are called __________.

a)

endangered

b)

not lucky

c)

extinct

d)

in a jam

6.
Which of these describes a species that has become extinct?
a)
fewer members of the species are dying than being born
b)
more members of the species are dying than being born
c)
very few members of a species are alive
d)
all members of a species have died
7.

True or False: Human beings are wiping out species much faster than nature creates them, causing what scientists call a "6th extinction"

a)

true

b)

false

8.
What event marks the end of each geologic area?
a)
1 million years
b)
burst of new life forms
c)
mass extinction
d)
ice age
9.

What do you call the plants or animals that once lived on Earth that have completely disappeared?

a)

Endangered Species

b)

Extinction

c)

Extinct Species

d)

Ecologically Extinct

10.
How can you help prevent extinctions?
a)
By not polluting our environment.
b)
By protecting sensitive habitats and species.
c)
By not eating or buying products from endangered animals.
d)
All of the above.
11.

Forest clearing, farming, and road building are all examples of

a)

Biodiversity

b)

Population distribution

c)

Habitat loss

d)

Climate Change

12.

Which extinction was the most beneficial to humans?

a)

The extinction of the woolly mammoths

b)

The extinction of the dinosaurs

c)

The extinction of the trilobites

d)

The extinction of the dodo birds

13.
Suppose a pond dries up. What will most likely happen to the fish that lived there?
a)
They will learn to live on land.
b)
They will move to another pond.
c)
They will learn to breathe air.
d)
They will not survive.
14.
Adelie penguins live in large groups in Antarctica. They lay their eggs in dry, rocky areas. These areas can be flooded when snow melts. According to the text, which of these is the greatest threat to Adelie penguins?
a)
new predators moving into the area
b)
competition from other Adelie penguins
c)
rising temperatures in the penguins' habitat
d)
people polluting and building in the penguins' habitat
15.

Evidence of an animal or plant that lived a long time ago on Earth is called a ________.

a)

fossil

b)

tiger

c)

extinct

d)

endangered

16.

The dinosaurs went extinct in the __________ Mass extinction

a)

Cretaceous-Tertiary (KT)

b)

Triassic Jurassic

c)

Ordovician-Silurian

d)

None of the options

17.

The reasons for the pattern of extinction rates after 1700 are (check all that apply)

a)

more predators are eating these organisms

b)

destruction of habitats through logging and agriculture

c)

climate change

d)

hunting

e)

more volcanic activity

18.

What are the common causes of Species Extinction?

(Check all the possible answers)

a)

Hunting

b)

Reforestation

c)

Deforestation

d)

Over Exploitation

e)

Pollution

19.

It is one of the common causes of species extinction where human destroy the natural home of animals and its environment.

a)

Hunting

b)

Deforestation

c)

Global Warming

d)

Pollution

20.

What are the benefits of conserving a habitat?

a)

It increases a species' chance of survival

b)

It prevents disruption to food chains

c)

It helps in the discovery of new medicines

d)

It reduces global warming