Test 4 (Chapters 1-2) Flashcards
The stiff bristles on the body of the earthworm
setae
Most crustaceans have how many body regions?
3
Earthworms enrich the soil with what?
their castings
When the head and thorax are joined together, the body region is called…
cephalothorax
Worms are not arthropods because they do not have this - a protective outer covering
an exoskeleton or external skeleton
Most crustaceans have how many legs
10
By releasing poison through the stink glands along the sides of its body near its many legs, this insect defends itself
millipede
Most crustaceans breathe with
gills
A centipede has how many pairs of legs on most body segments
one
The pair of legs closest to the centipede’s what are the most poisonous?
Mouth
the structure that directs the work of the cell
nucleus
the tread like structures in a cell that determine the characteristics of the organism and how it runs
chromosomes
the jellylike fluid that fills the cell
cytoplasm
the structure that surrounds the cell and protects it
cell membrane
Using its foot as if it were sliding on its stomach allows what type of insect to move?
gastropod
An invertebrate that builds a protective limestone cup at the base of its body
coral polyp
Mussels, oysters, clams, scallops are all what? It means mollusks having two matching shells
bivalves
Five or more rays, each with two rows of tube feet
sea star
The snail is part of a group of one-shelled mollusks called…
univalve
the crustacean that cements itself to an object when it is young
barnacle
