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Savvas 7th Grade Ecosystems and Biomes Test

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Last updated over 2 years ago
29 questions
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Question 1
1.

An organism that can make its own food is called a

Question 2
2.

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

Question 3
3.

The nonliving parts of an ecosystem are called

Question 4
4.

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

Question 5
5.

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

Question 6
6.

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

Question 7
7.

Ponds and rivers are two types of

Question 8
8.

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

Question 9
9.

Which biome is extremely cold and dry?

Question 10
10.

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

Question 11
11.

The mating of California condors in zoos is an example of

Question 12
12.

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

Question 13
13.

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

Question 14
14.
Bacteria and fungi are known as _______ because they break down the remains of organisms.
Question 15
15.
The soil that is frozen all year, called permafrost, is found in a _______ biome.
Question 16
16.
Water vapor turns into droplets of liquid water in the process of_______
Question 17
17.
Certain bacteria change nitrogen gas into a usable form in a process called_______
Question 18
18.
Setting aside a marsh as a wildlife refuge is an example of the _______ approach to protecting biodiversity.
Question 19
19.
The part of an ecosystem where an organism lives and feeds is called the organism’s_______
Question 20
20.

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

Question 21
21.

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

Question 22
22.

Second-level consumers may be either carnivores or omnivores.

Question 23
23.

Producers release the gas oxygen as a product of photosynthesis.

Question 24
24.

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

Question 25
25.

The arrow in a food chain represents the energy.

Question 26
26.

Describe two roles bacteria play in the nitrogen cycle.

Question 27
27.

Explain why decomposers are essential to life on Earth.

Question 28
28.

Explain the difference between a population and a community in an ecosystem.

Question 29
29.

Briefly describe the steps in the water cycle.