Invertebartes Flashcards
What is the basic unit of structure and function in living things?
Cell
What is a group of similar cells that perform a specific function?
Tissue
What is a structure that is composed of different kinds of tissue?
Organ
What is a group of structures that perform the broadest functions of an animal?
System
What is the line of symmetry where the quality of being divisible into halves that are mirror images?
Bilateral Symmetry
What is the quality of having many lines of symmetry that all pass through a central point?
Radial Symmetry
What is the immature form of an animal that looks very different from the adult?
Larva
What is an invertebrate animal that uses stinging cells to capture food and defend itself?
Cnidarian
What is a cnidarian body plan characterized by a vaselike shape and usually adapted for a life attached to an underwater surface?
Polyp
What is a cnidarian body plan characterized by a bowl shape and adapted for a free-swimming life?
Medusa
What is a circulatory system in which the heart pumps blood into open spaces in the body and blood in not confined to blood vessels?
Open Circulatory System
What is an organ that removes oxygen from water?
Gill
What is a mollusk with a single shell or no shell?
Gastropod
What is an animal that eats only plants?
Herbivore
What is an animal that eats only other animals?
Carnivore
What is a mollusk that has two shells held together by hinges and strong muscles?
Bivalve
What is an animal that eats both plants and animals?
Omnivore
What is an ocean-dwelling mollusk whose foot is adapted as tentacles that surround its mouth?
Cephalopod
What is an invertebrate that has an external skeleton, a segmented body, and jointed appendages?
Arthropod
What is a waxy, waterproof outer shell or outer skeleton that protects the animal and helps prevent evaporation of water?
Exoskeleton
What is the process of shedding an outgrown exoskeleton?
Molting
What is an appendage on the head of an animal that contains sense organs?
Antenna
What is an arthropod that has two or three body sections, five or more pairs of legs, and two pairs of antenna?
Crustacean
What is the process in which an animal’s body undergoes dramatic changes in form during its life?
Metamorphosis
What is an arthropod with two body sections, four pairs of legs, and no antenna?
Arachnid
What is the hind section of an arthropod’s body that contains its reproductive organs and part of its digestive tract?
Abdomen
What is an internal skeleton?
Endoskeleton
Name the seven levels of the classification system in order.
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
What are the four functions of animals?
- Obtain food and oxygen
- Keep internal conditions stable
- Move
- Reproduce
Having pores is a characteristic of which invertebrate phylum?
Porifera
Filter feeders is a characteristic of which invertebrate phylum?
Porifera
Having no tissues or organs is a character of which invertebrate phylum?
Porifera
Sponges are in what phylum?
Porifera
Stinging cells is a characteristic of which invertebrate phylum?
Cnidarian
Having a central cavity which takes in food is a characteristic of which invertebrate phylum?
Cnidarian
Arachnids are a group of which invertebrate phylum?
Arthropods
What are the two main body types of cnidarians?
- Polyp
2. Medusa
Portuguese Man of War is in which phylum?
Cnidarians
