6th Grade Science Test 4 Flashcards
most crustaceans have how many body regions
three
when the head and thorax are joined together, the body region is called the
cephalothorax
many crustaceans have ___ legs
ten
most crustaceans breathe with
gills
a centipede has __ pair(s) of legs on most body segments
one
the pair of legs closest to the centipede’s ___ is always poisonous
mouth
by releasing poison through the stink glands along the sides of its body near its many legs, the ___ defends itself
millipede
Worms are not arthropods because they do not have a(n) _____, a protective outer covering.
exoskeleton
earthworms enrich the soil with their
castings
the stiff bristles on the body of the earthworm
setae
the threadlike structures in an cell that determine the characteristics of the organism and how it runs
chromosomes
the structure that surrounds the cell and protects it
cell membrane
the jellylike fluid that fills the cell
cytoplasm
the structure that directs the work of the cell
nucleus
using its foot as if it were sliding on its stomach allows a ___ to move
gastropod
mussels, oysters, clams, and scallops are all ___, mollusks having two matching shells
bivalves
the snail is part of a group of one-shelled mollusks called
bivalves
five or more rays, each with two rows of tube feet, are formed on the
sea star
an invertebrate that builds a protective limestone cup at the base of its body
coral polyp
the tiniest crab
pea crab
a shrimp that searches for parasites and other harmful things on a fish
cleaner shrimp
the wood louse whose nickname is the roly-poly; expels an offensive odor when attacked
pill bug
the crab whose shell covers only the front part of its body
hermit crab
a small, freshwater lobster
crayfish
the lobster with no pincers
spiny lobster
the favorite food of some whales
krill
the shrimp that has “gill feet”; often used as aquarium food
brine shrimp
the shrimp with a stun gun
pistol shrimp
the crustacean that cements itself to an object when it is young
barnacle
amoeba
mollusks
ant
insects
barnacle
crustaceans
clam
mollusks
crab
crustaceans
ladybird beetle
insects
octopus
mollusks
paramecium
protozoans
scorpion
arachnids
tarantula
arachnids
the process of transformation which insects undergo
metamorphosis
the chemical process by which a plant produces food
photosynthesis
the green pigment that gives a green plant its color
chlorophyll
a plant that lives for only one season of growth
annual
bear cones instead of flowers
conifers
some of the smallest green plants
algae
a good source of sugar and syrup
maples
known for producing acorns
oak trees
the tree that has smooth, papery bark that peels off in thin layers
birch tree
have needles that grow in bundles
pine trees
Be able to identify pictures of the following plant families
grass rose pea composite lily
Write a paragraph describing the amoeba. Include three important facts
1-has no definite shape (shape changes)
2-moves by means of pseudopods
3-uses its pseudopods to engulf food
4-must live in water; some live in the bodies of people or animals
5-some parasitic amoebas cause diseases such as amoebic dysentery
