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Science Investigation 3

Total questions: 16

Worksheet time: 16mins

Name
Class
Date
1.

What is one way you can determine if a crayfish is a male or female?

a)

the length of the swimmerets

b)

the color of the crayfish

c)

number of legs they have

d)

size of the pincers

2.

What is it called when a lobster, crab, or crayfish shed their hard shells?

a)

crustacean

b)

carapace

c)

molt

d)

omnivor

3.

What is the name of these long long "feather like" structures under the crayfish tail that help hold their eggs?

a)

tail flap

b)

antenna

c)

walking legs

d)

swimmerets

4.

When you observe a crayfish eating, fighting with another crayfish, or raising its pincers when threatened, you are observing its...

a)

properties

b)

behavior

c)

defense

d)

feeding habits

5.

The large dark circle on this crayfish is what?

a)

swimmeret

b)

ear

c)

antenna

d)

eye

6.

This is a picture of the crayfishes...

a)

tail flap

b)

walking legs

c)

pincers

d)

antenna

7.

This is what part of the crayfish anatomy?

a)

tail flap

b)

pincers

c)

antenna

d)

eye

8.

Is this a picture of a male or female crayfish?

a)

male

b)

female

9.

The 2 long structures that extend off the front of this crayfishes head are called what?

a)

pincers

b)

eyes

c)

walking legs

d)

antenna

10.

Identify what part of the crayfish the red arrow is pointing to.

a)

swimmeret

b)

walking legs

c)

pincers

d)

antenna

11.

Is this a drawing of a male or female?

a)

male

b)

female

12.

Is this a drawing of a male or female?

a)

male

b)

female

13.

Which feature of a rabbit is most likely inherited from its parents?

a)

a torn ear

b)

a scar on its nose

c)

brown fur

d)

a chipped tooth

14.

What basic need do beavers meet by cutting and gathering tree branches into a big pile?

a)

shelter

b)

space

c)

air

d)

water

15.

Crayfish bristles are used for...

a)

gathering food

b)

holding crayfish eggs

c)

sensing the environment

16.

Some basic needs a crayfish must have in its habitat are what?

a)

food, water, shelter

b)

pincers, antena, swimmeret

c)

sun, water, friends

d)

rocks and plants