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7th Grade Science Practice Quiz (Goal 85+)

Total questions: 20

Worksheet time: 5hrs 0mins

Name
Class
Date
1.

Biotic factors of an ecosystem are

a)

Non-Living

b)

Plants

c)

Living Things

d)

Soil

2.
The ability to conserve water is an important adaptation in which biome?
a)
Coniferous Forest
b)
Deciduous Forest
c)
Desert
d)
Tundra
3.

Which two biomes have the least precipitation?

a)

Tropical Rain Forest and Temperate Grassland

b)

Savanna and Tropical Dry Forest

c)

Tundra and Desert

d)

Boreal Forest and Temperate Woodland

4.
This biome is found around the equator and is home to a large amount of biodiversity.
a)
Deserts
b)
Tropical Rain Forests
c)
Savannas
d)
Chaparral 
5.
What is this biome?
a)
Deciduous Forest
b)
Tropical Rainforest
6.
Which major biome is home to cacti, brittle bushes, small reptiles, and coyotes?
a)
Desert
b)
Taiga
c)
Tundra
d)
Grassland
7.

Areas defined by their geographical location and ecological similarity are called?

a)

Ecozones

b)

Biotopes

c)

Biomes

d)

Biodomes

8.
We live in the deciduous forest biome.  How many seasons do we have?
a)
2
b)
4
c)
6
9.

What biome is this?

a)

Taiga

b)

Desert

c)

Tundra

d)

Grassland

10.

Which picture shows a coniferous forest?

a)
b)
c)
d)
11.
What does biodiversity mean?
a)
Only one species in an area.
b)
The different amount of species in an area
c)
All abiotic life
d)
Nitrogen fixation
12.
 Which of the following activities contributes the most to carbon emissions globally?
a)
Deforestation
b)
Agriculture
c)
Burning fossil fuels
d)
Respiration
13.
If there is more food than usual in an ecosystem, then the population will mostly likely...
a)
stay the same
b)
decrease
c)
increase
14.
What happened to the wolf population between 1980 and 1982?
a)
it increased rapidly
b)
it decreased rapidly
15.

How do biodiversity and stability work together?

a)

The lower the biodiversity the greater the stability of an ecosystem.

b)

The higher the biodiversity, the less stable the ecosystem

c)

The higher the biodiversity, the greater the stability of the ecosystem.

d)

Biodiversity has nothing to do with ecosystem stability.

16.

Which statement best describes an example of high biodiversity?

a)

A pond ecosystem is populated by a single species of frogs

b)

A state park that includes multiple forest and freshwater ecosystems with many different species of fish, birds and frogs in a variety of colors

c)

A desert ecosystem is populated by organ pipe cacti, camels, and armadillo lizards

17.

Which ecosystem below has the HIGHEST biodiversity?

a)
b)
c)
18.

Species that are clearly critical to the functioning of an ecosystem are known as

a)

biodiversity

b)

keystone species

c)

main species

d)

native species

19.

An organism that eats another organism to get energy

a)

Producer

b)

Consumer

c)

Decomposer

d)

Prey

20.

An animal that is hunted and eaten by another animal.

a)

predator

b)

prey

c)

carnivore

d)

herbivore