WorksheetsUnicellular & Multicellular Organisms
Total questions: 37
Worksheet time: 28mins
Name
Class
Date
1.
Which best describes a difference between a unicellular organism and a multicellular organism?
a)
A unicellular organism is a plant and a multicellular organism is a human.
b)
A unicellular organism can survive with only itself. A multicellular organism has many cells working together.
c)
A multicellular organism is simple and a unicellular organism is complex.
d)
A unicellular organism can only be found in certain biomes but a multicellular organism can be found anywhere on Earth.
2.
Which best describes a difference between a unicellular organism and a multicellular organism?
a)
A unicellular organism is a plant and a multicellular organism is a human.
b)
A unicellular organism has one purpose- to survive. A multicellular organism has many cells working together to keep the organism alive.
c)
A multicellular organism is simple and a unicellular organism is complex.
d)
A unicellular organism can only be found in certain biomes but a multicellular organism can be found anywhere on Earth.
3.
Which is an example of a single-celled organism?
a)
bird
b)
cricket
c)
snake
d)
bacteria
4.
Which best explains how a single-celled organism can survive without other cells?
a)
They do not need any substance from outside of the cell.
b)
They are able to perform all necessary functions within one cell.
c)
They do not need to perform more than one function to survive.
d)
They can't survive without other cells.
5.
Which is an example of a multicellular organism?
a)
amoeba
b)
bacteria
c)
worm
d)
fungi
6.
A single-cell organism can do everything a cell from a multicellular organism can do except
a)
reproduce
b)
specialize
c)
get rid of waste
d)
use energy
7.
Fungi and bacteria are both single-celled organisms. What do they most likely have in common?
a)
Both fungi and bacteria are large organisms.
b)
Both fungi and bacteria can carry out all life functions in their one cell.
c)
Both fungi and bacteria need sunlight and nutrients from the soil to be able to grow.
d)
Both fungi and bacteria are highly specialized to do only one job so they must work with other cells to obtain food.
8.
Sue and Allie read about different kinds of organisms. They read about an organism with a respiratory system, digestive system, skeletal system, and muscular system. Which can Sue and Allie most likely conclude about this organism?
a)
The organism is unicellular.
b)
This organism is microscopic.
c)
The organism is multicellular.
d)
The organism does not have any cells.
9.
How are algae able to survive?
a)
The algae get energy from other algae.
b)
The algae do not require energy to survive.
c)
The single cell controls all the algae’s life processes.
d)
Other multi-celled organisms provide food for the algae.
10.
Molly is reading a book in science class. She reads one sentence that says, “This organism is capable of surviving as a single cell.” Which organism is she most likelyreading about?
a)
a mushroom
b)
a bacteria
c)
a flower
d)
a cricket
11.
Which is an example of a multicellular organism?
a)
bacteria
b)
bear
c)
algae
d)
yeast
12.
Which is an example of a unicellular organism?
a)
flower
b)
beetle
c)
dog
d)
algae
13.
Which best describes the main job of most cells in multicellular organisms?
a)
Cells work to keep themselves alive.
b)
Cells work to keep the organism alive.
c)
Cells work to release needed materials.
d)
Cells work to store unneeded materials.
14.
Which organism performs all life processes in one cell?
a)
grass
b)
bacteria
c)
mushroom
d)
butterfly
15.
Which best explains why humans are multicellular organisms?
a)
Human cells are too small to function alone.
b)
Human cells join together to form one large cell.
c)
Humans need many cells to carry out life processes.
d)
Humans have many systems that perform the same function.
16.
Molly is reading a book in science class. She reads one sentence that says, “This organism is capable of surviving as a single cell.” Which organism is she most likely reading about?
a)
amoeba
b)
flower
c)
mushroom
d)
insect
17.
Why do humans require many different types of cells to survive?
a)
Human cells are identical and work together to perform the same function.
b)
Human cells are specialized and work together to perform the same function.
c)
Human cells are identical and work independently to perform different functions.
d)
Human cells are specialized and work independently to perform different functions.
18.
Which is the best way to classify grasshoppers?
a)
Grasshoppers are multi-celled organisms because they are made up of one cell that carries out all of their life processes.
b)
Grasshoppers are single-celled organisms because they are made up of one cell that carries out all of their life processes.
c)
Grasshoppers are single-celled organisms because they are made up of many cells that carry out all of their life processes.
d)
Grasshoppers are multi-celled organisms because they are made up of many cells that carry out all of their life processes.
19.
Which statement best describes a bacterial cell?
a)
It contains more than one cell.
b)
It is a complete organism.
c)
It is part of a larger organism.
d)
It contains different kinds of cells.
20.
Which is an example of a single-celled organism?
a)
fish
b)
tree
c)
fungi
d)
human
21.
Which best describes a multi-celled organism?
a)
basic
b)
simple
c)
uniform
d)
complex
22.
Which statement would most likely be found in an article about multi-celled organisms like plants?
a)
Plants have a simple structure.
b)
Plants contain only one cell that performs all functions.
c)
Plants do not need to eat, remove waste, or reproduce.
d)
Plants contain many specialized cells that perform different functions.
23.
How are single-celled organisms and multi-celled organisms similar?
a)
Both need food for energy and growth.
b)
Both have a skeletal system for support.
c)
Both require the interaction of many cells to survive.
d)
Both are able to carry out all life functions in only one cell.
24.
How are multi-celled and single-celled organisms different?
a)
Multi-celled organisms need energy to survive, while single-celled organisms need no energy to survive.
b)
Single-celled organisms can be seen without using a microscope, while multi-celled organisms are microscopic.
c)
Multi-celled organisms have large numbers of specialized cells to perform a variety of life functions, while single-celled organisms complete life functions with one cell.
d)
Single-celled organisms have large numbers of identical cells that all perform the same function, while multi-celled organisms have cells that are all different and perform different life functions.
25.
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.
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.
Unicellular organisms have organs like humans and animals. (Like a brain, lungs, or a heart)
a)
true
b)
false
28.
What does CTOS(O) stand for?
a)
cells->teology->oxygen->systems->organs
b)
cells->tissues->organs->systems->organisms
29.
Unicellular organisms need transport systems.
a)
False
b)
True
30.
Multicellular organisms has no direct contact.
a)
False
b)
True
31.
Multicellular organisms are made up of one cell.
a)
True
b)
False
32.
Most unicellular organisms need a microscope to be seen.
a)
True
b)
False
33.
Most unicellular organisms need a microscope to be seen.
a)
True
b)
False
34.
Multi and Unicellular organisms cannot get rid of waste.
a)
True
b)
False
35.
Multicellular organisms can fulfill every basic life process.
a)
True
b)
False
36.
How can you tell cells are different?
a)
shape
b)
color
c)
size
d)
type
37.
What are multicellular cells?
a)
nerve cells
b)
red blood cells
c)
fat cells
d)
bacterial cells
100 %
