Simple Invertebrates
Mollusks and Annelid Worms
Arthropods
Echinoderns
Vocab
100
What are the tree types of symmetry?
What is bilateral, radial, and asymmetrical symmetry?
100
What are snails, slugs, clams, oysters, squids, and octopi?
What are mollusks?
100
What is an eye composed of many light detectors?
What is a compound eye?
100
What is an internal skeleton made of bone and cartilage?
What is endoskeleton?
100
What is a hard, external, supporting structure?
What is an exoskeleton?
200
What is the simplest invertebrate?
What is a sponge?
200
What are called polychaetes?
What are marine worms called?
200
What is a system of canal filled with watery fluid that circulates throughout the body of an echinoderm?
What is the water vascular system?
200
What is any part of a larger structure such as the body of an organism that is set off by natural or arbitrary boundaries?
What is a segment?
300
What is a body cavity that contains the internal organs?
What is a coelom
300
What is a tongue covered with curved teeth?
What is a radula?
300
What are mouthparts that can pierce and chew food?
What are mandibles?
300
What organism use their spines for defense and movement?
What do sea urchins and sand dollars use their spines for?
300
What is a feeler that is on the head of an invertebrate such as crustaceans or an insect that senses touch taste or smell?
What is an antenna?
400
What are the two types of jellyfish?
What is medusa and polyp?
400
What is a layer of tissue that cover the visceral mass?
What is the mantle?
400
What is 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 stars are close relatives to the sea star?
What are brittle stars and basket stars?
400
What is a system in which circulatory fluid is not contained entirely within vessels?
What is open circulatory system?
500
What allows animals to sense their environment?
What is neurons?
500
What are the gills, gut, and other organs that lie in the center of a mollusks body?
What is visceral mass?
500
What is the shedding of an exoskeleton several times?
What is molting?
500
What echinoderms have worm like shapes?
What are the sea cucumbers shapes?
500
What is a concentrated mass of nerve cells?
What is a ganglion?
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