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Internal and External Structures Among Living Things

Total questions: 21

Worksheet time: 34mins

Name
Class
Date
1.

All structures are made by humans.

a)

true

b)

false

2.

Which of the following are considered internal structures? (Check all that apply)

a)

skin

b)

heart

c)

eyes

d)

lungs

e)

brain

3.

What is the function of the water monitor lizard's claws? (choose all that apply)

a)

digging

b)

climbing

c)

walking

d)

tearing apart prey

e)

swimming

4.

What function might butterfly wings that look like leaves have?

a)

to camouflage it

b)

help it fly better

c)

to make it ugly so other animals won't eat it

5.

What external structure can help an animal climb trees and defend itself.

a)

Claws

b)

Nose

c)

Scales

d)

Whiskers

6.

Which are examples of structures made by humans (Choose all that apply)

a)

Bridge

b)

leaves

c)

Buildings

d)

Roads

7.

An external structure is defined as

a)

anything made up of parts held together in a particular way

b)

structures found on the inside of living things, such as the heart, lungs or brain of an animal

c)

The purpose of a structure that helps the plant or animal survive.

d)

structures found on the outside of living things, such as skin, eyes and claws of an animal

8.

What is the function of a water monitor lizard's tail structure?

a)

to slap prey

b)

to slap predators

c)

to swim

d)

to burrow

9.

Holds the plant in the ground, transports water and food to the plant

a)

Stem

b)

Root

c)

Flower

d)

Leaf

10.

Transports the nutrients and minerals through the plant and up to the leaves

a)

Flower

b)

Root

c)

Stem

d)

Leaf

11.

Lungs

a)

Internal

b)

External

12.

Skin

a)

Internal

b)

External

13.

Ears

a)

Internal

b)

External

14.

Animals can use ​ (a)   or ​ (b)   to breathe.

Choose from the below words
lungs
gills
skin
stomata
15.

Root hairs help plants to absorb​ (a)  

Choose from the below words
water
sunlight
carbon dioxide
soil
16.

The shark's teeth and a bird's beak are examples of ​ (a)  

Choose from the below words
external structures
internal structures
behavioral adaptations
17.

Label parts of the flower

18.
Which of these structures inspired a new type of swimsuit?
a)
mustard seeds
b)
shark skin
c)
fish scales
d)
butterfly wings
19.

What does this animal most likely eat?

a)

grass

b)

fish

c)

nectar

20.

What does this animal most likely eat?

a)

grass

b)

fish

c)

nectar

21.

External means ______

a)

Inside

b)

Excited

c)

Exit

d)

Extinct