NEW
Font size
S
M
L
XL
WorksheetsCrayfish Unit Review
Total questions: 37
Worksheet time: 19mins
Name
Class
Date
1.
The crayfish used its sense of
_________ to identify your hand as possible danger.
_________ to identify your hand as possible danger.
a)
sight
b)
taste
c)
hearing
d)
behavior
2.
The __________the crayfish made to the movement of your hand was when it raised its pincers in defense.
a)
stimulus
b)
noise
c)
sense
d)
response
3.
An example of a stimulus.
a)
the crayfish slowly walking around
b)
the crayfish raising its pincers
c)
your hand moving toward the crayfish
4.
The process of shedding and replacing the exoskeleton of a crayfish.
a)
regeneration
b)
respiration
c)
hibernating
d)
molting
5.
The process of re-growing lost body parts such as pincers and walking legs.
a)
hibernation
b)
regeneration
c)
molting
d)
respiration
6.
Crayfish lay eggs in the
a)
Winter
b)
Fall
c)
Spring
d)
Fall and Spring
7.
Crayfish are water breathers. They can stay out of the water for short periods of time if...
a)
they are looking for a mate
b)
they are looking to hibernate
c)
it's time to molt
d)
their gills stay wet, so they can breathe
8.
Which senses are important to the crayfish?
a)
taste
b)
taste, hearing, sight and touch
c)
taste, sight, and touch
d)
taste, hearing, and touch
9.
Crayfish burrow into the mud to _________
a)
hide from enemies
b)
escape the winter cold
c)
Both to hide from enemies and to escape from the cold
d)
to find food.
10.
How do crayfish protect themselves from predators?
a)
hide in holes, under rocks or in weeds
b)
threatening and attacking with their pincers
c)
swim backward to escape danger
d)
All of the choices
11.
Why do crayfish molt?
a)
the exoskeleton is hard and gets broken
b)
they like to molt so they are soft
c)
as a crayfish grows the exoskeleton doesn't grow so it must be replaced.
12.
Although different crustaceans live in all kinds of water, crayfish live in _____________
a)
salt water
b)
fresh water
c)
soda water
d)
oceans
13.
Which word best describes a crayfish's legs?
a)
curved
b)
straight
c)
jointed
14.
Which family does crayfish belong to?
a)
amphibian
b)
crustacean
c)
reptile
d)
mammal
15.
Crayfish use their antennae for:
a)
eating
b)
walking
c)
sensing vibrations
d)
seeing
16.
Why would a crayfish get into a fight?
a)
to show dominance
b)
to see who is the strongest
c)
to protect their territory
d)
to show dominance AND protect their territory
17.
How do you hold a crayfish?
a)
by its pincers
b)
by its tail
c)
by its thorax
d)
by its head
18.
Crayfish usually search for food...
a)
during the day
b)
at night
c)
all the time
d)
none of the above
19.
A crayfish uses it senses to test the environment to find...
a)
food, shelter, and respiration
b)
food, a mate, and respiration
c)
food, shelter, and a mate
d)
touch, hearing, and taste
20.
Crayfish have skeletons that are called...
a)
endoskeletons
b)
exoskeletons
c)
uniskeletons
d)
swimmersets
21.
Why do crayfish consume (eat) their molted shell?
a)
it tastes good
b)
they are hungry
c)
the calcium it has makes their new shell stronger
22.
Crayfish are Omnivores?
a)
True
b)
False
23.
Mandibles are on the underside of the abdomen and circulate water, balance, in females, to carry eggs.
a)
True
b)
False
24.
A scavenger is an animal that feeds on dead decaying things.
a)
True
b)
False
25.
The Compound Eye of the crayfish sees one image at a time, just like you.
a)
True
b)
False
26.
All of the surrounding physical conditions that affect an organism is called its environment.
a)
True
b)
False
27.
Crayfish are part of the order of crustaceans called decapods
a)
True
b)
False
28.
A crayfish is an organism.
a)
True
b)
False
29.
Since crayfish live in water, they breathe with lungs.
a)
True
b)
False
30.
Crustaceans, like crayfish, are all vertebrates.
a)
True
b)
False
31.
Small appendages on the underside of the crayfish's abdomen.
a)
pincers
b)
mandibles
c)
scavenger
d)
swimmerets
32.
jaws of the crayfish, (part of the mouth parts)
a)
mandibles
b)
pincers
c)
swimmerets
33.
the hard, protective covering which supports an arthropod
a)
abdomen
b)
environment
c)
exoskeleton
34.
all the surrounding physical conditions that effect an organism.
a)
pincer
b)
pond
c)
Tray
d)
environment
35.
renewal or restoration of a body part after an injury.
a)
respiration
b)
gills
c)
regeneration
d)
hereditary trait
36.
This is a picture of a ________.
a)
female
b)
male
37.
This is a picture of a ________.
a)
female
b)
male
Reset
