Free Printable 3/25 Unicellular and Multicellular (Practice)

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3/25 Unicellular and Multicellular (Practice)

Total questions: 25

Worksheet time: 16mins

Name

Class

Date

Which organism performs all life processes in one cell?

grass

bacteria

mushroom

butterfly

Which best explains why humans are multicellular organisms?

Human cells are too small to function alone.

Human cells join together to form one large cell.

Humans need many cells to carry out life processes.

Humans have many systems that perform the same function.

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?

amoeba

flower

mushroom

insect

How are algae able to survive?

The algae get energy from other algae.

The algae do not require energy to survive.

The single cell controls all the algae’s life processes.

Other multi-celled organisms provide food for the algae.

What is an organism?

A dead animal

A living thing

A pencil

A shoe

Which one is NOT a life process?

Get rid of waste

Nutrition/Energy

Shake it off

Grow and develop

Select the unicellular organisms that produce their own food. (They are also classified as producers/plants)

Euglena and algae

Bacteria and snail

Tree and paramecium

Flower and algae

Why do multicellular organisms need so many cells?

They need specialized cells to survive. Specialized cells perform a specific job/function.

They need many cells to all do the same job/function.

They need many cells to have a dancing cell party.

What is the difference between multi-celled and single-celled’s organisms?

Single-celled organisms are “simple” and multi-celled organisms are “crazy.”

Single-celled organisms are “super” and multi-celled organisms are “complex.”

Single-celled organisms are “simple” and multi-celled organisms are “complex.”

10.

In what way are both humans and bacteria the same?

Both are living things.

Both are non-living things.

Both are multi-cellular organisms.

Both are single-celled organisms.

11.

Mushrooms, Plants, and Animals

Unicellular organisms

Multicellular organisms

All of the above

12.

Multicellular Organisms

Made of 1 cell

Made of more than 1 cell

13.

2. What does unicellular means?

1. many cell

2. one cell

3. two cell

4.more cell

14.

5. Based on this image is the Euglena multicellular or unicellular?

1. Multicellular

2. Unicellular

15.

3. What does the prefix "multi" means?

1. many

2. one

3. single

16.

1. What does the prefix "uni" means?

1. Two

2. One

4.many

17.

Which of the following is NOT a requirement for all living things?

have at least one cell

use energy

adapt to environment

breathe oxygen with lungs

18.

A rock would be considered ________.

unicellular

multicelluar

nonliving

living

19.

When a daphnia (water flea) gives birth to offspring, which characteristic of life is being shown?

ability to reproduce

adapt to environment

cells need energy

organization

20.

When a plant starts to grow towards the bright sunlight that is shining through the side of a window, which characteristic of life is being shown?

ability to reproduce

adapt to environment

organization

none of the above

21.

Which best describes the main job of most cells in multicellular organisms?

Cells work to keep themselves alive.

Cells work to keep the organism alive.

Cells work to release needed materials.

Cells work to store unneeded materials.

22.

How are multi-celled and single-celled organisms different?

Multi-celled organisms need energy to survive, while single-celled organisms need no energy to survive.

Single-celled organisms can be seen without using a microscope, while multi-celled organisms are microscopic.

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.

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.

23.

Which is a difference between frogs and bacteria?

Frogs are able to control all life processes in one cell, while bacteria cannot.

Frogs are single-celled organisms, while bacteria are multi-celled organisms.

Frogs are multi-celled organisms, while bacteria are single-celled organisms.

Frogs must rely on other single-celled organisms for survival, while bacteria are dependent only on themselves.

24.

Which best describes a multi-celled organism?

basic

simple

uniform

complex

25.

A single-cell organism can do everything a cell from a multicellular organism can do except

reproduce

specialize

get rid of waste

use energy

100 %

3/25 Unicellular and Multicellular (Practice)

Total questions: 25

Worksheet time: 16mins

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