Definitions
An animal without a backbone, such as an insect
Invertebrate
The central body part of an arthropod (between the abdomen and the head)
Thorax
An invertebrate with jointed legs and two pairs of antennae, such as a crab.
Crustacean
Are there more vertebrates or invertebrates in the ocean?
Invertebrates
What are the three main parts of an insect's body?
Head, thorax, abdomen
A hard, outer skeleton that surrounds an animal’s body
Exoskeleton
A young animal that develops into an adult by a complete change in body shape
Larva
Long sensory organs on an arthropod’s head
Antennae
Where are the two main places you can find worms?
Soil and Water
How many legs do all insects have?
Six legs
The pattern of changes that occurs in each generation of species.
Life Cycle
A mollusk with a shell made of two parts or valves, such as an oyster or mussel.
Bivalve
A soft bodied invertebrate that is often protected by a hard shell.
Mollusk
Name 5 echinoderms
Starfish, sea urchins, sea cucumbers, feather stars, brittle stars
What is the process called when crustaceans shed their shell?
Molting
A major change in the animal’s body shape during its life cycle.
Metamorphosis
A small sea animal that catches food with singing tentacles; many live in large colonies on coral reefs.
Coral
An immature insect that resembles an adult but has no wings.
Nymph
What are the three steps of a worm's decomposition process?
Leaching, Mixing, Fragmentation
What two groups of animals both have external skeletons and jointed legs?
Crustaceans and Arthropods
A sea animal with an internal skeleton and a body divided into five equal parts, such as a starfish
Echinoderm
The umbrella-shaped, swimming stage in the life cycle of jellyfish and other cnidarians.
Medusa
A small sea animal with a hollow cylindrical body and a ring of tentacles around its mouth; one of the two stages in the life cycle of cnidarians.
Polyp
How do coral and algae work together?
The algae feed the coral by producing food using photosynthesis. The coral protects the algae and also gives it any additional nutrients that it needs.
Name the four steps of a butterfly's life cycle.
Egg, Larva, Chrysalis, Butterfly