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horseshoe crabs Flashcards | StudBud
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horseshoe crabs
horseshoe crabs
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Flashcards
22 cards
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Practice quiz
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Questions
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Answers
1
What do horseshoe crabs use their long thin tails for?
Flying
Flipping themselves over
Stabbing their prey/predators
Digging a home
2
What is their main predator?
Humans
Birds
Crabs
Fish
3
How many years have horseshoe crabs been around?
450 billion
220 million
450 million
365 days
4
horseshoe crabs will die in less than 5 ppt of salt.
False
True
5
What is one way they are used for medicine?
intravenous solutions
injectable drugs
Vaccines
implantable medical things
6
Horseshoe crabs have __ eyes.
4
over 9000
2
10
7
warmup: what does the horseshoe crab look like?
purple
bumps for eyes, and a tail, and tiny spikes all over
two spikes for eyes, and a tail, and round bumps all over
blue-ey claws, orange eyes/stalks
8
How
do horseshoe crabs stay cool?
they dig into the wet sand
they put on air conditioning
they swim to cooler water
9
Where do horseshoe crabs go when they get older?
Shallower Water
Deeper water
to heaven
10
time is shorter: What are horseshoe crabs related to?
Spiders
Snakes
Humans
Crabs
11
the biggest horseshoe crab ever found was more than 2 ft. long w/ out tail
True
False
12
break: What is the second part of the life cycle of horseshoe crabs?
Larvae
Adults
Eggs
Juveniles
13
What is another animal that eats the eggs on the shore?
Turtles
Birds
Dogs
rocket ships
14
What type of breathing apparatus do Horseshoe Crabs posses?
lungs (land only )
they breathe through their skin
Gills( water only )
Book Gills ( can be on land as long as gills are wet )
15
What animal eats the horseshoe crab's eggs?
humans
Turtles
Octopus
Shorebirds
16
Horseshoe crabs live in....
North America
the forest
South America
Asia
17
What color blood do horseshoe crabs have?
yellow
blue
green
red
18
When do horseshoe crabs eat?
During the day, at high tide
Before daytime, at low tide
Whenever they feel like
19
Horseshoe crabs have blue blood because of the presence of what element?
Copper
potato
Iron
Cobalt
20
break: horseshoe crabs can live in deep/shallow water
False
True
21
faster: Horseshoe crabs help humans.....
make problems in the world.
test medicines for harmful germs.
make things into avocados.
find sharks.
22
What kingdom is horseshoe crabs in
Animals
Horses
Horseshoes
Crabs
