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- 1. Multiple Choice
An illustration of two fish is provided. Which paired statements could be used to distinguish the fish using a dichotomous key?Eyes on side of head
Eyes on top of headOne set of dorsal fins
Two sets of dorsal finsMouth at front of head
Mouth on underside of headRounded caudal fin
Forked caudal fin - 2. Multiple ChoiceAn illustration of four leaves and a dichotomous key are provided. Use the dichotomous key to identify which of the leaves is from a magnolia tree.Leaf 1Leaf 2Leaf 3Leaf 4
- 3. 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
- 4. 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 summertime.It is wet from a recent rain storm.Its leaves curl up on the edges.It is eaten by native jungle ants.
- 5. Multiple ChoiceAn illustration of three beetles is given. A student examines three different species of beetles that are related. What structure is identical in all three beetle species?Antennae lengthPlacement of eyesMarkings on abdomenWidth of thorax
- 6. Multiple ChoiceA dichotomous key is provided. A fish is caught that has eyes on the side of its head and a wide body covered in spots. What kind of fish is this?CornetfishFlounderPuffer fishSnapper
- 7. Multiple ChoiceAn illustration of an organism and a dichotomous key are given. What is the organism?ArachnidDragonflyFruit flyMayfly
- 8. Multiple ChoiceA 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
- 9. Multiple ChoiceWhich of the following characteristics will most likely be helpful in identifying a butterfly using a dichotomous key?Migrates north every spring.Hangs on branches to rest.Flutters wings faster on hot days.Hind wings have tail extensions.
- 10. Multiple ChoiceA dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?ColeopteraDipteraHeteropteraLepidoptera
- 11. 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?Daddy Long LegsScorpionWind scorpionWhip scorpion
- 12. Multiple ChoiceAn illustration and a dichotomous key are given. What is the correct classification for this organism?Class InsectaOrder AmblygygiOrder AraneaeOrder Scorpiones
- 13. Multiple ChoiceA labeled diagram of a fiddler crab is provided. Which of the following is an accurate observation of the structures that 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.
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