Savvas 7th Grade Ecosystems and Biomes Test

Last updated almost 3 years ago

29 questions

1

2

3

Last updated almost 3 years ago

29 questions

1

Bacteria and fungi are known as _______  because they break down the remains of organisms.

1

The soil that is frozen all year, called permafrost, is found in a _______  biome.

1

Water vapor turns into droplets of liquid water in the process of_______ 

1

Certain bacteria change nitrogen gas into a usable form in a process called_______ 

1

Setting aside a marsh as a wildlife refuge is an example of the _______ approach to protecting biodiversity.

1

The part of an ecosystem where an organism lives and feeds is called the organism’s_______ 

1

2

Describe two roles bacteria play in the nitrogen cycle.

2

2

3

consumer

producer 

decomposer

the nitrogen cycle

the water cycle

photosynthesis

organisms 

biotic factors 

 abiotic factors

linear

linear with stops and start

circular

niche diversity

habitat fragmentation

biodiversity

climate 

biome

energy pyramid

marine ecosystems.

freshwater ecosystems.

estuary ecosystems.

food web.

niche

energy pyramid.

mountains 

desert

tundra

extinct 

endangered

threatened

habitat preservation.

captive breeding.

biodiversity.

first-level consumer

second-level consumer

decomposer

food web

food chain

energy pyramid

Bacteria and fungi are known as _______  because they break down the remains of organisms.

The soil that is frozen all year, called permafrost, is found in a _______  biome.

Water vapor turns into droplets of liquid water in the process of_______ 

Certain bacteria change nitrogen gas into a usable form in a process called_______ 

Setting aside a marsh as a wildlife refuge is an example of the _______ approach to protecting biodiversity.

The part of an ecosystem where an organism lives and feeds is called the organism’s_______ 

True

False

True

False

True

False

True

False

True

False

True

False

An organism that can make its own food is called a

consumer

producer 

decomposer

In which process do producers use carbon from carbon dioxide to produce other carbon-containing molecules?

the nitrogen cycle

the water cycle

photosynthesis

The nonliving parts of an ecosystem are called

organisms 

biotic factors 

 abiotic factors

If you were to make a physical model of the carbon cycle, what shape would the model take on?

linear

linear with stops and start

circular

The number of different species in an area is referred to as its

niche diversity

habitat fragmentation

biodiversity

A group of land ecosystems with similar climates and organisms is called a(n)

climate 

biome

energy pyramid

Ponds and rivers are two types of

marine ecosystems.

freshwater ecosystems.

estuary ecosystems.

The many overlapping food chains in an ecosystem make up a(n)

food web.

niche

energy pyramid.

Which biome is extremely cold and dry?

mountains 

desert

tundra

If all members of a species disappear from Earth, the species is said to be

extinct 

endangered

threatened

The mating of California condors in zoos is an example of

habitat preservation.

captive breeding.

biodiversity.

If a kestrel eats a mouse that eats grass, the kestrel is a

first-level consumer

second-level consumer

decomposer

A diagram that shows how much energy is available at each feeding level in an ecosystem is a(n) 

food web

food chain

energy pyramid

The deciduous forest biome is typically populated by many grasses, along with a few shrubs and trees.

True

False

Organisms that capture the energy of sunlight to make food are called producers.

True

False

Second-level consumers may be either carnivores or omnivores.

True

False

Producers release the gas oxygen as a product of photosynthesis.

True

False

Oak, maple, and beech trees, which lose their leaves each year, are typically found in a boreal forest.

True

False

The arrow in a food chain represents the energy.

True

False