What a Tree-t
This is a term for clogged xylem tubes.
What is heartwood?
These are tiny holes in an arachnid's abdomen.
What are spiracles?
This is the deepest river in the world.
What is the Congo River?
These are the numbers of spider species (1) in Illinois and (2) in the world.
What is (1) 500+ in Illinois and (2) 50,000+ in the world?
The wood of this tree is used to make chests that repel insects.
What is the eastern red cedar?
This was the length of time since the last ice age.
What is 12,000 years?
This is the liquid inside arachnids (rather than blood).
BONUS: This is its color.
What is hemolymph?
BONUS: What is light blue?
These are openings on the floor of the ocean where superheated fluid mixes with cold salt water.
What are hydrothermal vents?
This is the most diverse group of arachnids.
What are mites?
The wood of this tree is used to make crates and flooring.
What is the red maple?
These are the two types of trees that made up forests in east central Illinois.
What are oak and hickory?
This is the largest order of arachnids.
What is Araneae?
These are the three places that fens can be found.
What are Europe, Canada, and the northern part of the US?
This type of mite lives in eyelashes and pores around the nose.
What is the demodex mite?
The wood of this tree is used to make furniture, gun barrels, and boats.
What is the black walnut tree?
These are the two types of forests that covered Illinois (1) after the last ice age and (2) now.
What are (1) boreal forest and (2) temperate deciduous forests?
This scorpion is found in southern Illinois.
What is the striped bark scorpion?
These are the ocean zones, in order from the surface to the floor.
What are the sunlight, twilight, midnight, abyssal, and trench zones?
This is the anatomical difference between the larvae and adults of mites and ticks.
What is the number of legs? Larvae have 6 and adults have 8 legs.
The wood of this tree was used by early French settlers to make barges.
What is the American sycamore?
These are three things that can be learned from a tree's core sample.
What are its age, wet and dry years, if there was a fire, and whether there were fires or insect attacks?
This is the name of the hairs on a spider that pick up vibrations in the air.
What are trichobothria?
These are three types of habitats that estuaries can support.
What are tidal flats, salt marshes, mangroves, and/or seagrass beds?
This is why ticks are hard to remove.
What is the hypostome is covered with tiny backwards hooks?
The wood of this tree is used to make wall paneling.
What is the sweetgum tree?