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WorksheetsCrayfish
Total questions: 19
Worksheet time: 10mins
Name
Class
Date
1.
The crayfish used its sense of __________________ to identify Mr. Scaduto's hand as possible danger.
a)
Smell
b)
Hearing
c)
Sight
d)
Behavior
2.
The ___________ the crayfish made to the movement of Mr. Scaduto's hand was when it raised its pincers in defense.
a)
Response
b)
Sense
c)
Stimulus
d)
Noise
3.
The stimulus in this experiment is .........
a)
the crayfish raising its pincers
b)
Mr. Scaduto placing the crayfish in the plastic box
c)
the crayfish slowly walking around
d)
Mr. Scaduto's hand moving toward the crayfish
4.
_______________ is the process of shedding and replacing the exoskeleton of a crayfish.
a)
Molting
b)
Hibernating
c)
Sleeping
d)
Respiration
5.
The process of RE-growing lost body parts such as walking legs is known as
a)
REgeneration
b)
Respiration
c)
Hibernation
d)
Molting
6.
When do crayfish lay eggs in the North?
a)
Winter
b)
Spring
c)
Fall
d)
Summer
7.
When do crayfish lay eggs in the South?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
8.
Crayfish usually live in cold water. They can stay out of water for short periods of time ________________
a)
to molt
b)
to hibernate
c)
to look for a mate
d)
as long as their gills stay wet, so they can breathe
9.
Which sense are most important to the crayfish?
a)
taste and hearing
b)
taste, hearing, touch
c)
taste, hearing, sight, and touch
d)
taste, sight, and touc
10.
How are male and female crayfish different?
a)
Female crayfish have larger eyes
b)
Male crayfish have larger claws
c)
The swimmeret closest to the walking legs are larger on the female than on the male
d)
The swimmerets closest to the walking legs are larger on the male than on the female
11.
Crayfish burrow into the mud to
a)
to hide from enemies
b)
to escape the winter cold
c)
neither A nor B
d)
both A and B
12.
Why does a crayfish molt?
a)
Crayfish like to molt because they become soft for a short time
b)
A crayfish fools predators into thinking its shed exoskeleton is a crayfish
c)
It's exoskeleton is hard and gets broken often
d)
As a crayfish grows its exoskeleton does not grow and must be replaced
13.
What kind of water do crayfish live in?
a)
Fresh water
b)
Salt water
c)
Soda water
d)
Oceans
14.
Which word BEST describes a crayfish's legs?
a)
Jointed
b)
Curved
c)
Straight
15.
What family does a crayfish belong to?
a)
Mammal
b)
Reptile
c)
Amphibian
d)
Crustacean
16.
Crayfish use their antennae for __________
a)
sensing vibrations
b)
eating
c)
walking
d)
seeing
17.
Why might a crayfish get into a fight?
a)
to see who is strongest
b)
to protect their territory
c)
to show dominance
d)
both B & C
18.
How do you hold a crayfish?
a)
by its pincers
b)
by its thorax
c)
by its tail
d)
by its head
19.
In ponds or streams, crayfish usually search for food _________________.
a)
at night
b)
during the day
c)
all the time
d)
none of the above
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