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WorksheetsStructures of Life: Crayfish
Total questions: 15
Worksheet time: 11mins
Crayfish shed their shells. This is called?
shedding
molting
Crayfish live in
salt water
fresh water
Crayfish breathe with
lungs
gills
Crayfish can stay out of water as long as
they want
2 hours
their gills are wet
How do crayfish grab food and dig?
with their tails
with their teeth
with their pincers
Crayfish can _______ body parts like legs and claws if one is lost.
regenerate
borrow
find
Crayfish eat
anything small
decaying (dead) plants
decaying (dead) animals
All of the above
Crayfish hunt for food
in the morning
in the afternoon
at night
Crayfish antenna are covered with small hairs, called bristles, to help it
see in dark water
chew its food
sense the environment
Female crayfish have longer swimmerets (under the tail) for
walking
swimming
holding her eggs
When you observe a crayfish eating, raising its pincers when threatened, or swimming backwards when startled, you are observing its
defense
properties
behaviors
What are two ways that could help you decide whether a crayfish is male or female?
egg pore and longer swimmerets
short swimmerets
its smaller than another crayfish
What things do crayfish need to survive?
water, sun, shade
shelter, water, food
food, water
When do crayfish molt?
when they're adults
when they grow too big for the shell
when their mom tells them to
Crayfish are crustaceans. Which other creatures below are also crustaceans?
lobsters
crabs
cats
shrimp
