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Food chains and food webs:-

Total questions: 20

Worksheet time: 19mins

Name
Class
Date
1.

All living things need _______ to stay alive.

a)

producers

b)

consumers

c)

energy

d)

prey

2.

Plants are _________.

a)

producers

b)

consumers

c)

decomposers

d)

predators

3.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
4.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
5.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
6.
The diagram shows an example of what kind of organism
a)
Autotroph
b)
Heterotroph
c)
Decomposer
d)
Herbivore
7.
Why is the insect a consumer?
a)
It is eaten by a mouse.
b)
It can make its own food.
c)
It eats the plant.
8.
In the food chain pictured, the source of energy for the water plant is ______.
a)
Sun
b)
Water Plant
c)
Mayfly
d)
Trout
9.
Which of the following organisms is a producer?
a)
Sun
b)
Water Plant
c)
Mayfly 
d)
Trout
10.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
11.

Which of these is an organism that does not depend on another living thing for food?

a)

the Sun

b)

an insect

c)

a plant

d)

an animal

12.
Which of the following best describes the blue bird's (in the middle) role in this ecosystem?
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
13.
Another word for a living thing is a:
a)
animal
b)
organism
c)
plant
d)
community
14.

The shortgrass prairie is an ecosystem found in the Great Plains. Many different populations of animals depend on the prairie ecosystem for survival. A typical community includes animals such as snakes, birds, mice, rodents, and insects.


Which food chain most accurately demonstrates the flow of energy in a shortgrass prairie ecosystem?

a)

grasshopper → bird → rodent → buffalo

b)

hawk → snake → mouse → grasshopper

c)

grasshopper → mouse → snake → hawk

d)

snake → hawk → skunk → mouse

15.

The roadrunner is a desert bird that eats fruits and seeds. It also eats insects, spiders, scorpions, and rattlesnakes.


What would likely happen if the roadrunner population disappeared from its ecosystem?

a)

There would be no more fruits or seeds.

b)

There would a decrease in spider populations.

c)

The rattlesnake population would stay the same.

d)

There would be an increase in scorpion populations.

16.

The diagram shows a grassland food chain. If the mice are removed from this food chain, which animal population would most likely be affected first?

a)

Plant Seeds

b)

Field Mice

c)

Snakes

d)

Mountain Lions

17.
What do the arrows show in a food chain picture?
a)
They always point to the smallest animals.
b)
They point to the animal that tastes the best.
c)
They always point to the producers.
d)
They point in the direction that energy is flowing.
18.
Which food chain is in the correct order?
a)
Sun, bird, caterpillar, plant
b)
bird, caterpillar, plant, Sun
c)
Sun, plant, caterpillar, bird
d)
caterpillar, Sun, bird, plant
19.
Organisms that only eat meat are ______.
a)
omnivores
b)
carnivores
c)
herbivores
d)
food chains
20.
Organisms that eat only plants are ______.
a)
carnivores
b)
herbivores
c)
omnivores
d)
food chains