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Biology EOC Ecology & Systems Practice

Total questions: 60

Worksheet time: 4hrs 50mins

Name
Class
Date
1.

What is an example of a mutualistic relationship in an ecosystem?

a)

Bees and flowers

b)

Lions and zebras

c)

Wolves and rabbits

d)

Sharks and fish

2.

What is the primary source of energy in most ecosystems?

a)

wind

b)

water

c)

fire

d)

sun

3.

What is the process by which carbon is cycled between the atmosphere, plants, and animals?

a)

carbon transformation

b)

carbon recycling

c)

carbon transfer

d)

carbon cycle

4.

What is an example of a predator-prey relationship in a community?

a)

lion and zebra

b)

eagle and rabbit

c)

snake and mouse

d)

shark and fish

5.

What is the term for the variety of species in an ecosystem?

4 lines
6.

What is the role of decomposers in an ecosystem?

a)

Decomposers help plants grow by providing them with nutrients.

b)

Decomposers produce oxygen through the process of decomposition.

c)

Decomposers are responsible for pollinating flowers in an ecosystem.

d)

Decomposers break down dead organic matter and recycle nutrients.

7.

What is the process by which nitrogen is converted into a usable form by bacteria?

a)

nitrogen fixation

b)

nitrogen conversion

c)

bacterial transformation

d)

nitrogen adaptation

8.

What is an example of a parasitic relationship in an ecosystem?

a)

Squirrel and acorn

b)

Lion and zebra

c)

Tick and dog

d)

Bee and flower

9.

What is the term for the process of maintaining a stable internal environment in an organism?

a)

equilibrium

b)

metabolism

c)

adaptation

d)

homeostasis

10.

What is the main goal of biodiversity conservation?

a)

To protect and preserve the variety of life on Earth.

b)

To prioritize economic development over environmental protection.

c)

To eliminate all species that are not useful to humans.

d)

To exploit and use all natural resources for human benefit.

11.
 Which system is the stomach in?
a)
respiratory
b)
digestive
c)
nervous
d)
excretory
12.
 What is the main function of the respiratory system?
a)
take in oxygen and exhale waste like carbon dioxide
b)
move nutrients throughout the body
c)
take in carbon dioxide and exhale oxygen
13.
Where does digestion start?
a)
stomach
b)
mouth
c)
esophagus
14.
 What is the main job of the digestive system? 
a)
break down foods into nutrients that can be used by the body
b)
take in oxygen and exhale waste like carbon dioxide
c)
pump blood throughout the body
d)
makes the body hungry
15.
Which systems main function is to allow movement of the body?
a)
muscular
b)
digestive
c)
skeletal
d)
excretory
16.
The smallest units or parts of living things; the body's building blocks.
a)
cells
b)
organs
c)
tissues
d)
system
17.
Your large and small intestines are part of this body system.
a)
nervous
b)
digestive
c)
muscular
d)
skeletal
18.
A collection of the same kinds of cells working together to do the same job.
a)
cells
b)
tissues
c)
organs
d)
systems
19.
Your body systems work separately and do not effect each other.
a)
true
b)
false
20.
Which system provides shape and support, enables you to move, protects your internal organs, and stores minerals?
a)
skeletal
b)
muscular
c)
digestive
d)
nervous
21.
Which system takes food into the body, breaks down food, and absorbs the digested materials?
a)
respiratory
b)
circulatory
c)
digestive
d)
excretory
22.
When blood is used by the body it must pass through which of the following organs before it is pumped back out to the body?
a)
Lungs
b)
Brain
c)
Stomach
d)
Skin
23.
Which representation would show the organization of life from simplest to the most complex?
a)
Heart muscle tissue, cardiovascular system, heart muscle tissue
b)
cardiovascular system, heart muscle cells, heart muscle tissue
c)
cardiovascular system, heart tissue, heart cells
d)
Heart muscle cells - heart muscle tisse, heart, cardiovascular system
24.
Which characteristic do single-celled organisms and multicellular organisms have in common?
a)
Both have cells with specialized functions for each life process.
b)
Both perform all life processes within one cell.
c)
Both have a way to get rid of waste materials.
d)
Both are able to make food from sunlight.
25.
Which body system sends electrical signals to all other body systems?
a)
circulatory system
b)
nervous system
c)
digestive system
d)
skeletal system
26.
A scientist is trying to decide whether an organism is unicellular or multicellular.  Which information would help the scientist most to make her decision?
a)
size of the cells of the organism
b)
what the organism eats
c)
how many types of cells are in the organism
d)
how fast the organism grows
27.
Which two human body systems are most responsible for getting oxygen to cells?
a)
digestive and skeletal
b)
skeletal and circulatory
c)
circulatory and respiratory
d)
respiratory and digestive
28.
Which best compares the respiratory system to the circulatory system?
a)
The respiratory system transports oxygen to cells, while the circulatory system provides oxygen for cells.
b)
The respiratory system provides oxygen for cells, while the circulatory system transports oxygen to cells.
c)
The respiratory system breaks down food for cell energy, while the circulatory system rids the body of waste.
d)
The respiratory system rids the body of waste, while the circulatory system breaks down food for cell energy.
29.
Which best explains why both cats and humans are multicellular organisms?
a)
They get energy from many food sources.
b)
They get energy from a single food source
c)
They need only one cell to meet their basic needs.
d)
They need many cells working together to meet their basic needs.
30.
Which body systems work together to allow the body to move?
a)
nervous and skeletal
b)
muscular and skeletal
c)
nervous and circulatory
d)
muscular and circulatory
31.

A ____________ is the basic unit of structure and function for all living things.

a)

skin

b)

cell

c)

eyes

d)

heart

32.

A/an ___________________ is a group os tissues that work together to perform a specific job.

a)

organ

b)

cell

c)

skin

33.

What kind of tissue makes your body move?

a)

nerve tissue

b)

connective tissue

c)

muscle tissue

d)

epithlial tissue

34.

A ____________ is the basic unit of structure and function for all living things.

a)

skin

b)

cell

c)

eyes

d)

heart

35.

A/an ___________________ is a group os tissues that work together to perform a specific job.

a)

organ

b)

cell

c)

skin

36.

What kind of tissue makes your body move?

a)

nerve tissue

b)

connective tissue

c)

muscle tissue

d)

epithlial tissue

37.

Which body system is responsible for making us breathe?

a)

digestive system

b)

immune system

c)

excretory system

d)

respiratory system

38.

The main function of the respiratory system is to take in ______________ through the lungs and get rid of carbon dioxide and water.

a)

oxygen

b)

saliva

c)

water

d)

carbon dioxide

39.

The excretory system helps ___________ wastes in the body.

a)

bring in

b)

get rid of

40.

Which organ helps break down wastes into forms that can be excreted and recycles materials?

a)

kidneys

b)

liver

c)

lungs

41.

Which body system eliminates pathogens and sicknesses from invading the body?

a)

excretory system

b)

nervous system

c)

immune system

d)

respiratory system

42.

All of these are layers of the immune system EXCEPT:

a)

breathing passages

b)

mouth

c)

stomach

d)

skin

e)

heart

43.

The brain is the main organ that is part of the _____________ system.

a)

nervous system

b)

immune system

c)

respiratory system

d)

digestive system

44.

the frontal lobe, occipital lobe, parietal lobe, and the temporal lobe are all part of which organ?

a)

the brain

b)

the heart

45.

True or False: the digestive system is responsible for transforming your food into nutrients and energy to keep your body alive.

a)

true

b)

false

46.

The stomach is part of which organ system?

a)

digestive system

b)

respiratory system

c)

excretory system

d)

nervous system

47.

Which is the most important body system?

a)

nervous system

b)

digestive system

c)

respiratory system

d)

immune system

e)

all of the above- they are ALL important!

48.

Carries materials like energy from food and oxygen to the cells in the body

a)

Circulatory System

b)

Digestive System

c)

Respiratory System

d)

Skeletal System

49.

Strong muscle that pumps blood around the body

a)

Heart

b)

Lungs

c)

Veins

d)

Arteries

50.

Liquid part of the blood that delivers nutrients where they are needed.

a)

Blood vessels

b)

Arteries

c)

Plasma

d)

White blood cells

51.

Tubes that carry blood FROM the heart to the rest of the body.

a)

Veins

b)

Arteries

c)

Blood vessels

d)

Heart

52.

Where food enters the body and is chewed up

a)

Mouth

b)

Esophagus

c)

Stomach

d)

Liver

53.

The ________ help fight off germs in the body

a)

White blood cells

b)

Red blood cells

c)

Veins

d)

Arteries

54.

Tubes that carry USED blood BACK to the heart.

a)

Veins

b)

Arteries

c)

Blood Vessels

d)

White blood cells

55.

J-shaped sac that stores food and helps digest it

a)

Stomach

b)

Esophagus

c)

Liver

d)

Gallbladder

56.

Liquid that carries OXYGEN through your body's arteries and veins.

a)

Veins

b)

Arteries

c)

Blood

d)

Heart

57.

Cells that carry oxygen to the organs

a)

Red blood cells

b)

White blood cells

c)

Plasma

d)

Veins

58.

Tube that squeezes food down to the stomach.

a)

Esophagus

b)

Stomach

c)

Mouth

d)

Liver

59.

Hollow tube where food mixes with special juice.

a)

Small intestine

b)

Large intestine

c)

Stomach

d)

Heart

60.

Stores waste and removes water from food.

a)

Large intestine

b)

Small intestine

c)

Liver

d)

Gallbladder

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