Annelids
What is an invertebrate?
An animal without a backbone
What is an echinoderm?
A sea animal with an internal skeleton and a body divided into five equal parts
What is a mollusk?
A mollusk is a soft-bodied invertebrate that is often protected by a hard shell
What is a crustacean?
A crustacean is an invertebrate with jointed legs and two pairs of antennae
What is a metamorphosis?
A metamorphosis is a major change in the animal's body shape during its life cycle
What are Annelids?
Annelids are animals that are worm-like and have segmented bodies
What are Cnidarians?
Cnidarians are animals that live in water and have sack-like bodies with a single opening
What are porifera?
Porifera are animals that perforated interior walls; most feed on bacteria
What are arthropods?
Arthropods are animals that have segmented bodies, jointed legs; most have a hard exoskeleton (crabs and insects)
What does it mean to be a social insect?
Social insects function as members of a colony. Each member of a colony has a specific job and the colony is centered around the queen.
What are the four main groups of worms?
Ribbon worms, flatworms, segmented worms, and roundworms
How do corals grow?
Corals grow by budding from the parent polyp which is then buried.
What animals are in the mollusk phyla and where are they found?
The mollusk phyla includes snails, octopi, squids, and bivalves. They are found on land and in fresh or salt water.
Name several animals that are part of the crustacean class.
Shrimp, lobster, crabs, woodlice, sand fleas, and barnacles
How many pairs of wings do most insects have? What are their uses?
Describe what earthworms do.
Earthworms swallow soil as they move through it. They digest the plant matter in the soil they swallow and excrete the waste as worm cast.
Corals provide a place for the algae to live. In turn, algae produce sugar through photosynthesis and share some of it with the coral.
What distinguishes octopi and squids from the rest of the mollusk phyla?
They are the largest and most intelligent members of the mollusk phyla. They can also change the color of their mantles.
What is molting?
Molting is when a crab sheds its old shell and grows a new one.
What are the two life cycles that insects can go through? Explain both.
A three-stage life cycle and a four-stage life cycle. In a four-stage life cycle, the stages are egg, larva, chrysalis, and adult. In a three-stage life cycle, the stages are egg, nymph, and adult.
How do most marine worms eat?
Most marine worms are hunters. They shoot out a long tube called a proboscis, to grab their prey.
What are two common characteristics of echinoderms? Name a few examples of echinoderms.
Echinoderms have spiny skin and tube feet. Some examples are: starfish, sea urchins, sea cucumbers, bristle stars, and feather stars.
What do snails use their iron teeth for?
Some use them to grind up other mollusks, but scientists also believe they use them like a compass so that they won't get lost.
What are three ways a crab uses its pincers?
To defend themselves, catch and tear apart food, and signaling other animals
What are the 3 sections of the insect's body and what is found in each section?
The three sections are head, thorax, and abdomen. The head contains the eyes, jaws, and feelers. The thorax contains the legs and wings. The abdomen contains the intestine, reproductive organs, and breathing tubes.