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- 1. Multiple Choice
A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?JuniperPineSpruceFir - 2. Multiple ChoiceWhich of the following characteristics will most likely be helpful in identifying a butterfly using a dichotomous key?Migrates north every springhangs on branchesflutters wings fast on hot daysWings have long extensions
- 3. Multiple ChoiceA dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?ColeopteraHeteropteraDipteraLepidoptera
- 4. Multiple ChoiceA student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?Whip ScorpionWind ScorpionDaddy long legsScorpion
- 5. Multiple ChoiceAn illustration and a dichotomous key are given. What is the correct classification for this organism?Class InsectaOrder AmblygygiOrder AraneaeOrder Scorpiones
- 6. Multiple ChoiceA labeled diagram of a fiddler crab is provided. Which of the following is an accurate observation of the structures of a fiddler crab? Fiddler crabs have -five pairs of walking legs on each side.an enlarged propodus on both front legs.a pair of eyes on stalks at the top of the body.two pairs or chelipeds for a total of four.
- 7. Multiple ChoiceA table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between
arachnids and insects?Jointed legsBody segmentsPresence of eyesPresence of antennae - 8. Multiple ChoiceWhat step do we always start with when using dichotomous keys?1234
- 9. Multiple ChoiceA botanist discovers a new plant in the jungle. Which of the
following observations of the plant’s characteristics would be useful in determining its identity with a dichotomous key?It was discovered in the summertimeIt is wet from a recent rain storm.Its leaves curl up on the edges.It is eaten by native jungle ants. - 10. Multiple ChoiceWhen using a dichotomous key to identify organisms, what do we look at?physical featuresweather patternsenvironmentdiet
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