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Worksheets

Question Bank for Grade 9 Biology

Total questions: 143

Worksheet time: 3hrs 26mins

Name
Class
Date
1.

Why is combustion an important process in the carbon cycle?

a)

It turns fossil fuels into carbon dioxide.

b)

It turns once living things and organic matter into fossil fuels.

c)

It turns carbon dioxide into glucose, so animals can eat the carbon.

d)

It turns glucose into carbon dioxide, which gets released into the air.

2.

What is true about nutrients in the ecosystem (such as water, carbon, and nitrogen)?

a)

They are not affected by humans in the ecosystem.

b)

They cannot be recovered if they are lost in the ecosystem.

c)

They cycle through the ecosystem in different forms to support life.

d)

They are usually only found in one form in the ecosystem to support life.

3.

Why is decomposition an important process in the carbon cycle?

a)

It turns fossil fuels into carbon dioxide.

b)

It turns once living things and organic matter into fossil fuels.

c)

It turns carbon dioxide into glucose, so animals can eat the carbon.

d)

It turns glucose into carbon dioxide, which gets released into the air.

4.

Why is respiration an important process in the carbon cycle?

a)

It turns fossil fuels into carbon dioxide.

b)

It turns once living things and organic matter into fossil fuels.

c)

It turns carbon dioxide into glucose, so animals can eat the carbon.

d)

It turns glucose into carbon dioxide, which gets released into the air.

5.

Why is photosynthesis an important process in the carbon cycle?

a)

It turns fossil fuels into carbon dioxide.

b)

It turns once living things and organic matter into fossil fuels.

c)

It turns carbon dioxide into glucose, so animals can eat the carbon.

6.

How does a lion obtain the carbon it needs from a grass plant?

a)

The lion breathes in carbon given off by the grass.

b)

The lion cannot obtain the carbon in a grass plant.

c)

The lion absorbs the carbon given off by transpiration.

d)

The lion eats the antelope that ate the grass.

7.

Within the carbon cycle, anything that absorbs more carbon from the atmosphere than it releases.

a)

carbon sink

b)

carbon source

8.

Within the carbon cycle, anything that releases more carbon into the atmosphere than it absorbs.

a)

carbon sink

b)

carbon source

9.

Carbon can be released into the atmosphere by...

a)

Cell respiration in plants and animals on land

b)

Combustion of fossil fuels

c)

Cell respiration in plants and animals in the ocean

d)

Photosynthesis

10.

What is the process in which dead plants and animals become fossil fuels?

a)

Respiration

b)

Photosynthesis

c)

Combustion

d)

Decomposition

11.

What converts nitrogen gas into a usable form for plants and animals?

a)

bacteria

b)

rain

c)

fungi

d)

car exhaust

12.

According to this diagram, plants use nitrogen to make _________________________

a)

carbohydrates

b)

cellulose

c)

proteins

d)

unsaturated fats

13.

According to this diagram, what turns atmospheric nitrogen into NH3NH_3  ?

a)

nitrogen fixing bacteria

b)

plants

c)

denitrifying bacteria

d)

animals

14.

Which of the following is true about nitrifying bacteria?

a)

They turn ammonium into Nitrates and Nitrites.

b)

They come from animal waste.

c)

They do the process of denitrification.

d)

It comes from lightning.

15.

How does nitrogen get into the soil in the first place? Select all that apply.

a)

Animal waste

b)

Lightning

c)

Dead and decaying organisms

d)

Photosynthesis

16.
The flow of water from land into a body of water.
a)
groundwater
b)
headwaters
c)
run-off
d)
infiltration
17.
97% of the water on earth is _________, making it undrinkable for humans.
a)
fresh water
b)
ground water
c)
salt water
d)
surface water
18.
The hydrologic cycle is a continuous process driven by energy from the ...
a)
Moon.
b)
Sun.
c)
gravity.
d)
Earth's interior.
19.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
20.

Humans are disrupting the carbon cycle in ways that have resulted in increased levels of carbon dioxide in our atmosphere. Which of the following human activities are most directly responsible for this increase?

a)

I. Deforestation and the clearing of plants that absorb carbon dioxide through photosynthesis.

b)

II. The addition of larger amounts of carbon dioxide into the atmosphere by burning fossil fuels (coal, oil, natural gas).

c)

III. The production of cement.

d)

I and III only

e)

I, II and III

21.

The release of this element into the atmosphere is due, in large part, to fossil fuel combustion and deforestation.

a)

Sulfur

b)

Nitrogen

c)

Carbon

d)

Phosphorus

e)

All of the above cycles.

22.

Which of the following has shifted the storage of carbon from sediment to the atmosphere?

a)

Mining of coal

b)

Combustion of fossil fuels

c)

Increased occurrence of acid precipitation

d)

Extraction of crude oil

e)

Industrial smog

23.

the arrows from the plants TO the atmosphere represent this process

a)

transpiration

b)

decomposition

c)

photosynthesis

d)

cellular respiration

e)

precipitation

24.

Which one of these does not add CO2 to the atmosphere?

a)

cooking with gas

b)

planting trees

c)

burning wood

d)

riding in a bus

25.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
26.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
 decomposition and respiration
27.
In what process is Carbon transformed into chemical energy?
a)
Photosynthesis
b)
Respiration
c)
Primary Production
d)
Secondary Production
28.
In the carbon cycle, producers take in the gas __
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
carbon monoxide
29.
What is happening at 1?
a)
respiration: releasing CO2
b)
decomposing CO2 in the soil
c)
photosynthesis: absorbing CO2
d)
turning CO2 from the atmosphere into organic molecules
30.
What is the role of decomposers in an Ecosystem? 
a)
They recycle matter and nutrients to form fossil fuels
b)
They are burn and release as carbon dioxide
c)
Decomposers are responsible to turn oxygen into carbon dioxide
d)
They recycle energy back to the sun
31.
Using fossil fuels is a safe for the environment. 
a)
True
b)
False
32.
Organisms that need nitrogen to survive
a)
only plants
b)
only animals
c)
only bacteria
d)
all living organisms
33.
Plants and animals need nitrogen to make __________.
a)
Protein
b)
Carbohydrates
c)
Lipids
d)
Nucleic Acids
34.
Organisms that play a role in the nitrogen cycle
a)
only plants
b)
only animals
c)
only bacteria
d)
plants, animals, & bacteria
35.
When nitrogen gas is turned in to a form that plants and animals can use is called 
a)
Combustion
b)
Photosynthesis
c)
Decomposition
d)
Nitrogen Fixation
36.
How do  animals get nitrogen?
a)
the atmosphere 
b)
eating other organisms
c)
bacteria
d)
lightning 
37.
Building proteins and DNA is the reason organisms need what substance?
a)
Water
b)
Carbon
c)
Nitrogen
d)
Calcium
38.

The reduction of oxidized forms of nitrogen (nitrates), ultimately resulting in molecular nitrogen.

a)

ammonification

b)

denitrification

c)

nitrification

d)

nitrogen fixation

39.

An organism that feeds on dead or decaying plant or animal remains.

a)

omnivore

b)

herbivore

c)

carnivore

d)

detrivore

40.

Which process uses bacteria?

a)

ammonification

b)

denitrification

c)

nitrification

d)

nitrogen fixation

41.
________________ include both the living and non-living things in an environment.
a)
Ecosystems
b)
Environment
c)
Grasslands
d)
Rainforest
42.

Temperature, air, water, soil, sunlight and climate are all _____________ parts of an ecosystem.

a)

Abiotic

b)

Food Chain

c)

Habitat

d)

Biotic

43.
Eats plants (example: deer)
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Decomposer
44.
Eats plants and animals (example: humans)
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Decomposer
45.

In the energy pyramid here, which organisms have the most energy available?

a)

Producers

b)

Carnivores

c)

Herbivores

d)

Top Predator

46.
All food webs and food chains begin with _________________.
a)
primary consumer
b)
producers
c)
secondary consumers
d)
predators
47.
Use the diagram answer the question.
What is a fitting description for this diagram?
a)
A Food Chain
b)
An Ecosystem
c)
A Food Web
d)
Biotic and Abiotic Factors
48.
Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?
a)
Frog, Dragon Fly and snake
b)
Frog, trout and dragon fly
c)
Frog, salamander and trout
d)
Frog and phytoplankton
49.
True or False. In this Food Web Pyramid the consumers on each level only get about 10 percent of energy that the plants have stored.
a)
True
b)
False
50.

In the diagram, which organism provides nutrients for the

largest number of other organisms?

a)

Seal

b)

Herring

c)

Snapper

d)

Bluefish

51.

What are plants called in a food chain?

a)

Producers

b)

Consumers

c)

Decomposers

d)

Scavengers

52.

Which of these organisms would receive energy from the snake?

a)

Plant

b)

Rabbit

c)

Mouse

d)

Hawk

53.

Which type of consumer is always a first consumer?

a)

Herbivore

b)

Omnivore

c)

Carnivore

d)

Producer

54.

Which type of consumer could be a first or second consumer?

a)

Herbivore

b)

Omnivore

c)

Carnivore

d)

Producer

55.
What is another name for producer?
a)
consumer
b)
herbivore
c)
autotroph
d)
lichen
56.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
57.
What does a Secondary Consumer eat?
a)
Tertiary Consumers
b)
Primary Consumers
c)
Producers
d)
Secondary Consumers
58.
Energy increases as you move up the food pyramid (from bottom to top).
a)
True 
b)
False
59.
The smallest unit of life that can sustain itself is called...
a)
an organism.
b)
the biosphere.
c)
a population.
d)
a community.
60.
What are groups of different populations living togther in the same place at the same time called?
a)
An organism
b)
A population
c)
A community
d)
A biosphere
61.
What is it called when you have groups of different populations along with their abiotic factors?
a)
An organism
b)
A population
c)
A community
d)
An ecosystem
62.
Jacob is going out to his grandparents fram.  On the farm is a stream that he likes to fish at. When he is fishing he sees many differernt speacies of fish as well as maple and oak trees and dragonflies.  What Jacob is seeing is an example of what level of organization?
a)
organism
b)
population
c)
community
d)
ecosystem
63.

What is it called when a group of the same organisms (species) living together in the same place at the same time?

a)

An organism

b)

A population

c)

A community

d)

A biome

64.

Describes the living (or once living) factors in the environment.

a)

Abiotic

b)

Decomposer

c)

Food Chain

d)

Biotic

65.

Mice eat grain, snakes eat mice, hawks eat snakes is an example of a

a)

community

b)

competition

c)

food chain

d)

food web

66.
Match the correct term that is best illustrated in the picture below.
a)
Community
b)
Ecosystem
c)
Population
d)
Organism
67.
Match the correct term that is best illustrated in the picture below.
a)
Community
b)
Ecosystem
c)
Population
d)
Organism
68.
Match the correct term that is best illustrated in the picture below.
a)
Community
b)
Ecosystem
c)
Population
d)
Organism
69.
Match the correct term that is best illustrated in the picture below.
a)
Community
b)
Ecosystem
c)
Population
d)
Organism
70.
The picture below is an example of a ______.
a)
Life Cycle
b)
Food Chain
c)
Food Web
d)
Ecosystem
71.
Animals that hunt and eat other animals are called ______.
a)
Extinct
b)
Prey
c)
Predators
d)
Threatened
72.
Animals that are hunted and eaten by other animals are called _____.
a)
Extinct
b)
Prey
c)
Predators
d)
Threatened
73.
A ______ describes how energy in an ecosystem flows from one organism to another.
a)
Food Chain
b)
Energy Pyramid
c)
Food Web
d)
Consumer
74.
The area where an organism lives, grows, and develops is called a ______.
a)
Niche
b)
Ecosystem
c)
Habitat
d)
Community
75.
The symbiotic relationship where both organisms benefit is called _____.
a)
Parasitism
b)
Mutualism
c)
Commensalism 
76.
The symbiotic relationship where one organism benefits from living off the body of another organism and that organism gets harmed is called ______.
a)
Parasitism
b)
Mutualism
c)
Commensalism
77.
The symbiotic relationship where one organism benefits and the other organism is not affected is called ______. 
a)
Parasitism
b)
Mutualism
c)
Commensalism
78.
A species that is close to becoming extinct is called a(n) ______.
a)
Threatened Species
b)
Exitict Species
c)
Adapt Species
d)
Endangered Species 
79.
A species that is close to becoming endangered is called a(n) ______.
a)
Threatened Species
b)
Extinct Species 
c)
Endangered Species
d)
Adapted Species
80.
Animals that eat both plants and animals are called _____.
a)
Decomposers
b)
Herbivores
c)
Carnivores
d)
Omnivores
81.
Meat eating animals are called ______.
a)
Decomposers
b)
Herbivores
c)
Carnivores
d)
Omnicores
82.
Plant eating animals are called ______.
a)
Temperate Forest
b)
Herbivores
c)
Carnivores
d)
Omnivores
83.
These organisms break down the remains of uneaten plants and animals that have died.
a)
Decomposers
b)
Herbivores
c)
Carnivores
d)
Omnivores
84.
A(n) ______ shows how much energy is passes along to each feeding level in an ecosystem.
a)
Food Chain
b)
Food Web
c)
Energy Pyramid
d)
Biome
85.
Charles Darwin said that an organism who is better suited to the environment is more likely to _____.
a)
Become ill
b)
Survive
c)
Die
d)
Move
86.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
87.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
88.
If a frog is the prey, what could be the predator?
a)
Grass
b)
Insect
c)
Snake
d)
Snail
89.
What does a Primary Consumer eat?
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Producers
90.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
91.
A third-level consumer has to be which type?
a)
Carnivore.
b)
Decomposer.
c)
Producer.
d)
Herbivore.
92.
An animal that eats other animals is a....
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
93.
In a food web, arrows point at:
a)
who gets energy.
b)
who gets eaten.
94.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
95.
Bacteria, fungi, and earthworms are examples of: 
a)
scavengers
b)
predators
c)
prey
d)
decomposers
96.
What is missing from this food chain?
Grass > Grasshopper > Bird > Snake
a)
Producer
b)
Primary Consumer
c)
Secondary Consumer
d)
Decomposer
97.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
98.
__________ is an organism that eats BOTH plants and animals for energy.
a)
Omnivore
b)
Darnivore
c)
Carnivore
d)
Herbiovre
99.
Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.
a)
Omnivore
b)
Herbivore
c)
Carnivore
d)
Delivore
100.
Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.
a)
Franivore
b)
Carnivore
c)
Herbivore
d)
Omnivore
101.
If the grasshopper were to be removed completely from the food web, what organism would be most effected?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
102.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
103.
Which is a producer?
a)
deer
b)
tall grass
c)
lion
d)
worm
104.
Which level will contain plants?
a)
A
b)
B
c)
C
d)
D
105.
Which level has the most energy available?
a)
producer
b)
primary consumer
c)
secondary consumer
d)
tertiary consumer
106.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
107.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
108.
How much energy is available to be passed on to the next trophic level in an ecosystem?
a)
100%
b)
10%
c)
50%
d)
75%
109.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
110.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
111.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
112.
What is a trophic level?
a)
Each level represented within a food chain or web.
b)
Levels of ecosystems that the world is divided into.
c)
Different levels of nutrients present within an organism.
d)
The levels of sunlight an autotroph needs to survive. 
113.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
114.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
115.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
116.
no two species can occupy the exact same niche
a)
interspecific competition
b)
intraspecific competition
c)
competitive exclusion principle
d)
none of these
117.
the abundance of different species in an area
a)
composition
b)
biodiversity
c)
community
d)
species
118.
all populations that live in an area together
a)
population
b)
community
c)
ecosystem
d)
biosphere
119.
All individuals in same area of the same species
a)
population
b)
community
c)
species
d)
ecosystem
120.
study of interactions among organisms with each other and their environment
a)
ecology
b)
ecosystem
c)
predation
d)
population
121.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
122.
What is the most abundant gas in the atmosphere?
a)
hydrogen
b)
oxygen
c)
helium
d)
nitrogen
123.
Nitrogen that is not combined with other elements and found in the atmosphere as gas is _____.
a)
free nitrogen
b)
nitrogen compounds
c)
ammonia
d)
nitrates
124.
Where are denitrifying bacteria found?
a)
In the soil
b)
Root nodules
c)
In dead things
d)
In the atmosphere
125.
What happens during the process of nitrogen-fixation?
a)
Nitrogen compounds turn into free nitrogen
b)
Free nitrogen turns into nitrogen compounds
126.
What happens during the process of denitrification?
a)
Nitrogen compounds turn into free nitrogen
b)
Free nitrogen turns into nitrogen compounds
127.
Which is NOT a way that nitrogen compounds are added to the soil?
a)
Decay of dead organisms
b)
Denitrification
c)
Animal waste
d)
Nitrogen-fixation
128.
What is the only process that removes carbon from the atmosphere?
a)
combustion
b)
cellular respiration
c)
photosynthesis
d)
decomposition
129.
Where is carbon stored in the environment?
a)
Fossil fuels
b)
Wood of trees
c)
Calcium carbonate (shells and bones)
d)
All of the above
130.
What 2 things does a plant make during photosynthesis?
a)
oxygen, glucose
b)
glucose, carbon dioxide
c)
useable energy, glucose
d)
oxygen, carbon dioxide
131.
What 3 things are made during cellular respiration?
a)
useable energy, water, glucose
b)
glucose, water, carbon dioxide
c)
oxygen, carbon dioxide, glucose
d)
carbon dioxide, water, useable energy
132.
How nitrogen is "fixed" into useable form for plants...
a)
through action of bacteria only
b)
through lightning only
c)
through action of bacteria & lightning
d)
through photosynthesis
133.
What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?
a)
nitrogen composition
b)
ammonia 
c)
nitrogen fixation
d)
denitrification
134.
How do plants get the nitrogen they need?
a)
from the air
b)
from the soil or water in which they live
c)
from the Sun
d)
from broken-down rocks
135.
How does carbon in a grass plant get into a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion. 
c)
The carbon ends up in the food the lion eats. 
d)
The lion breathes in carbon given out by the plant
136.
Organisms require nitrogen to make which of the following?
a)
glucose and starch
b)
lipids and nucleic acids
c)
proteins and nucleic acids
d)
carbohydrates and proteins
137.
Which of the following is NOT an example of a legume?
a)
bluebonnets
b)
black beans
c)
tomatoes
d)
peas
138.
If the atmosphere is 78% N2, why can't we just get our nitrogen by breathing?
a)
We have no mechanism to break the triple bond of nitrogen between the atoms.
b)
Our lungs would be damaged by the N2.
c)
We need Oxygen for cellular respiration.
d)
The legumes take it up first.
139.
Which nutrient is not cycled through the atmosphere?
a)
carbon
b)
nitrogen
c)
phosphorous
d)
water
140.
What role do decomposers play in the phosphorous cycle?
a)
absorb phosphorous 
b)
release phosphorous into atmosphere
c)
return phosphorous into the soil
d)
combustion
141.
This is released by the weathering of rocks.
a)
Carbon
b)
Oxygen
c)
Phosphorus
d)
Nitrogen
142.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle.
143.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle

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