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Flow of Energy in Ecosystems

Total questions: 10

Worksheet time: 8mins

Name
Class
Date
1.

Most of the energy that accumulates in our ecosystem comes from the:

(a)  

2.

Plants convert ____________ energy into ___________ energy.

a)

light-chemical

b)

termal-motion

c)

chemical-motion

3.

During _________________, plants convert carbon dioxide, water and sunlight into glucose and oxygen.

a)

cellular respiration

b)

chemosynthesis

c)

photosynthesis

d)

summer

4.

Plants are _____________, which means they can make their own food or energy.

a)

consumers

b)

heterotrophs

c)

producers

d)

special

5.

Plants and other autotrophs always occupy the ___________ trophic level in a food chain.

a)

first

b)

second

c)

third

d)

forth

6.

Primary ____________ eat the plants to gain energy.

a)

producers

b)

consumers

c)

decomposers

d)

autotrophs

7.

Carnivores are animals that only eat:

a)

autotrophs

b)

omnivores

c)

carnivores

d)

herbivores

8.

___________________ are organisms that eat both plants and animals.

a)

herbivore

b)

omnivore

c)

carnivore

d)

decomposer

9.

_________________ are organisms that only eat producers.

a)

herbivore

b)

omnivore

c)

carnivore

d)

decomposer

10.

What % is lost in metabolic processes and heat between each trophic level?

a)

10%

b)

20%

c)

90%