These animals have round bodies with tentacles they use to sting the living things they eat.
jellies
100
Fishes use _____________ to take in oxygen from water.
gills
100
Scientists classify vertebrates with feathers, two legs covered with scales, and wings as _________________.
birds
100
__________________ are the traces of living things that lived long ago.
Fossils
200
Animals with backbones are called ________________.
vertebrates
200
How do mollusks move?
They use a muscular foot.
200
Young amphibians live in water and breathe with gills like _______________.
fish
200
T or F All mammals live on land.
False
200
T of F Fossils can be found in areas that have changed over time.
True
300
Animals without backbones are called ________________.
invertebrates
300
How many legs does an insect have?
6 legs
300
What if the life cycle of a frog?
eggs, early tadpole, late tadpole, adult
300
Mammals give __________ birth.
live
300
How does a backbone help the body?
It provides support and a framework for motion.
400
Why do scientists classify animals?
to better understand them
400
What is the largest group of invertebrates?
insects
400
Reptiles lay their eggs on _____________.
land
400
The shape of a beak helps a bird ___________ certain types of food.
eat
400
T or F A catfish is an invertebrate.
false
500
How are vertebrates and invertebrates alike? Different?
Alike--both animals, both have parts for moving from place to place, for eating, for protection
Different--body shapes, sizes, colors, backbone--have/not have
500
Name the categories of invertebrates.
sponges, worms, mollusks, arthropods, sea stars
500
Most fish have scales that feel ______________.
slimy
500
Because birds have different kinds of legs, beaks, wings, feathers, and other body parts, they can ___________ in many different places.