Ch 2 - Definitions (2.7 - 2.11) Flashcards
What is the term for an arthropod with a hard, crusty shell?
crustacean
What term describes the ability of crustaceans to replace lost body parts?
regeneration
What do we call the leglike limbs connected to a lobster’s abdomen?
swimmerets
What is a carnivore?
a flesh eater
What is a herbivore?
a plant eater
What is the term for soft-bodied invertebrates such as clams, oysters, snails, and squids?
mollusks
What is the term for a mollusk such as a small snail or slug that has a muscular foot that they use to slide forward on a layer of slime?
gastropod
What word describes one-shelled mollusks, such as snail, conch, or cowrie?
univalves
What word describes mollusks with two matching, fan-shaped shells joined by hinges, such as mussels, oysters, and scallops?
bivalves
What is the name for the group of mollusks in which the foot and head are combined into a single headlike structure?
cephalopods
What is the name for the miniature invertebrate made up of one cell?
protozoan
What is a cell?
A cell is the smallest living unit in any living organism.
What do we call the part of a cell that surrounds and protects the cell and determines what may enter?
the cell membrane
What do we call the jellylike fluid that fills the volume of a cell?
cytoplasm
What do we call the part of a cell often located near the centre that directs the work of the cell?
the nucleus
What are the threadlike structures in a cell’s nucleus that contain the insturctions for running a cell and making needed parts called?
chromosomes
What do we call the projections that an amoeba uses to move from place to place? (means ‘false feet’)
pseudopods
What are the tiny, hairlike structures that cover a paramecium and allow it to move called?
cilia
