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Food Chain, Food Web and Ecological Pyramid

Total questions: 17

Worksheet time: 3hrs 50mins

Name
Class
Date
1.
An organism that eats the secondary consumer.
a)
Primary Consumer
b)
Secondary Consumer
c)
Tertiary Consumer
d)
Consumer
2.

All food webs and food chains begin with _________________.

a)

primary consumer

b)

producers

c)

secondary consumers

d)

tertiary consumers

3.

Autotrophs are also know as __________ because they make their own food.

a)

Consumer

b)

Herbivore

c)

Producer

d)

Omnivore

4.
Which of the following best describes the small bird in the food web above?
a)
primary and secondary consumer
b)
secondary and tertiary consumer
c)
primary consumer only
d)
secondary consumer only
5.

Which of the following limits herbivore populations?

a)

Number of Predators

b)

Amount of Resources Available

c)

Amount of Space Available

d)

All of these answers are correct

6.
Organisms which carry out the process of decomposition by breaking down dead or decaying organisms.
a)
Consumer
b)
Producer
c)
Decomposer
d)
Herbivore
7.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
d)

trophic pyramid

8.
In a food web, arrows point at:
a)
who gets energy.
b)
who gets eaten.
9.

In this trophic pyramid, which organisms have the most biomass?

a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
10.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
11.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
12.

Which organism do the owl and the weasel compete for in the food web?

a)

Hawk

b)

Spider

c)

Grasshopper

d)

Shrew

13.

What is the role of the hawk is this food chain?

a)

It is a consumer

b)

It is the apex predator

c)

It is a carnivore

d)

All of the above

14.

The secondary consumer here is?

a)

The snake

b)

The Eagle

c)

The mouse

d)

The plant

15.

What does the grasshopper get energy from? 

a)
Grass
b)
Grasshopper
c)
Mouse
d)

Owl

16.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
17.

How are primary consumers different from secondary consumers?

a)

Primary consumers eat only plants; secondary consumers eat other consumers.

b)

Primary consumers eat other consumers; secondary consumers eat only plants.

c)

Primary consumers eat plants and other consumers; secondary consumers eat plants and decompose matter.

d)

Primary consumers eat plants and decompose matter; secondary consumers eat plants and other consumers.