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Biology Final 2

Across
Hookworms are in this group
Ticks and spiders
Exoskeleton building material
These animals' young have placentas
These carry Lyme disease
These animals lay eggs
Chordates have these pouches
These worms are flat!
Type of "lungs" a spider has
These worms have a stage that is free-living in soil
Spider fangs
The chewing mouth parts of crustaceans are ____
This type of "crab" is not a crustacean
Literally means "joint foot"
Help sponges survive bad conditions
Down
Annelids that suck blood
Earthworm group
Sponges are ____ feeders
Fish that live most of their lives in fresh water
(2 words) helps a fish's buoyancy
Most chordates are _____
These can have fish, cows, or pigs as intermediate hosts
These tubules are for insects' excretion
Fish use these for respiration
These have a nerve net
Intermediate host for a fluke