any part of a larger structure, such as the body of an organism that is set off by a natural or arbitrary boundaries
What is segments
100
a hard, external supporting structure
What is exoskeleton
100
what does arthropod mean?
What is "jointed foot"
100
what are mouthparts that can pierce and chew food?
What is mandibles.
100
adult echinoderms have radial symmetry. What symmetry do their larva have?
What is bilateral symmetry
200
an animal that does not have a backbone
What is invertebrate
200
an eye composed of many light detectors
What is compound eye
200
what are the three main body parts of arthropods?
What is head, thorax, and abdomen
200
spiders, scorpions, mites, and ticks all belong to what category?
What is arachnids
200
around the mouth is a circle of nerve fibers called the what?
What is nerve ring.
300
a mass of nerves.
What is ganglion
300
a feeler that is on the head of an invertebrate that senses, touch, taste, or smell.
What is antenna
300
what are arthropods classified by?
What is The kind of body parts it has like the number of legs, eyes, and antenna.
300
Name at least two animals that go through the change called complete metamorphosis
What is butterflies, beetles, flies, bees, wasps, and ants.
300
what kind of starfish look closely alike with sea stars? They have long slim arms and are often smaller than sea stars.
What is brittle stars and basket stars
400
the digestive tract.
What is gut
400
a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place
What is metamorphosis
400
What percentage of all animal species are arthropods?
What is 75%
400
These are known as parasites that suck other animals' blood. sometimes doctors use these in surgury to prevent swelling
What is leeches
400
These have no arms and have a soft leathery body. They have a worm like shape.
What is sea cucumbers.
500
is a body cavity that surrounds the gut and contains internal organs.
What is coelom
500
an internal skeleton made of bone or cartilage
What is endoskeleton
500
what kind of arthropod has two pairs of antennae?
What is crustaceans
500
This class lives in freshwater, lakes, and streams or on land in damp places. They find their food by using sensory lobes. They have a brain for processing information about their surroundings.
What is planarians.
500
what echinoderms are round and their endoskeletons form a solid shell like structure? One part of the class burrows into soft sand or mud and they eat tiny particles of food they find.