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Matter and Energy in Organisms

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.
An organism that makes its own food is known as
a)
consumer
b)
scavenger
c)
producer
d)
decomposer
2.

What is an organism called that feeds on another organism?

a)

consumer

b)

scavenger

c)

producer

d)

decomposer

3.

All matter is made of what

a)

energy

b)

atoms

c)

electrons

d)

compounds

4.
Molecules are 
a)
2 atoms bound together 
b)
2 elements bound together 
c)
2 or more atoms mixed together
d)
2 or more atoms bound together 
5.
Uses dead plants and animals for energy.
a)
worm
b)
grass
c)
rabbit
d)
none
6.

If there were no decomposers, which of the following would most likely happen?

a)

Animals would start performing photosynthesis.

b)

Plants and animals would remain living for a longer period of time.

c)

The amount of dead animal matter would decrease.

d)

Plants would lack nutrients they receive from decomposers.

7.

An organism that return matter from dead plants and animals back to the soil is called a ____________?

a)

carnivore

b)

decomposer

c)

herbivore

d)

omnivore

8.
Which best describes how decomposers help support life in an ecosystem?
a)
Decomposers add nutrients to the soil.
b)
Decomposers provide a habitat in the ecosystem.
c)
Decomposers add producers to the ecosystem.
d)
Decomposers provide energy for consumers.
9.
What is the name of the process where the remains of living things rot, decay or break down?
a)
Disintegration
b)
Dissolve
c)
Decomposition
d)
Recycling
10.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

CO2 + light + H2O --> O2 + Sugar

b)

CO2 + sugar + H2O --> O2 + light

c)

O2 + light + H2O --> CO2 + Sugar

d)

CO2 + O2 + H2O --> Light+ Sugar

11.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
12.
If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?
a)
Ingestion of carbon dioxide
b)
Filtration of water through the soil
c)
Photosynthesis
d)
Water absorbtion
13.

What major energy transformation occurs during photosynthesis?

a)

Light --> Chemical

b)

Kinetic --> Light

c)

Chemical --> Light

d)

Light --> Chemical

14.
Which organelle in the plant cell performs photosynthesis?
a)
Chloroplast
b)
Mitochondria
c)
Nucleus
d)
Cytoplasm
15.
The reactants of photosynthesis are
a)
sugar and water.
b)
sugar and oxygen.
c)
carbon dioxide and water.
d)
carbon dioxide and oxygen.