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18 Cards in this Set
- Front
- Back
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Often called “ living fossil” |
Horseshoe crab |
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What subphylum and class is the horseshoe crab in |
Sub- chelicerata Class- merostomata |
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Where are horseshoe crabs found |
In shallow water along the North American Atlantic coat, Japan, the East Indies and along the coast of Southern Asia |
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How many walking legs does a horseshoe crab have |
4 pairs |
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At what tide does a horseshoe crab come up to mate |
A high tide |
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What extent insect do they resemble |
Trilobites |
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When do horseshoe crab feed |
At night |
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What do horseshoe crabs feed on? |
Worms and small mollusks |
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What kind of blood do they have |
Bright blue b/c of using copper based hemocyanin to transport oxygen |
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Sub- Crustacea Crustaceans live in what environments |
Marine, some live in freshwater and a few are terrestrial |
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What are they called |
Insects of the sea |
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What kinds of animals are in this subphylum |
Lobster, crawfish, shrimp, barnacles, sand fleas, etc |
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In most crustaceans one or more thoracic segments are fused with the head to form a what |
Cephalothorax |
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What is their exoskeleton made out of |
Calcium carbonate and chitin |
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How many antennae do they have |
2 pairs |
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Most have 3 pairs of... and 2 pairs of .. |
Chewing appendages, the mandibles...... maxillae which are used for feeding |
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What type of eyes do they have |
Compound eyes |
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What do their eyes sit on |
Stalks |
