Dichotomous Key




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Dichotomous Key:
1. a. Flying (go to 2)

b. Not flying (go to 6)


2. a. Feathered (go to 3)

b. Not feathered…………………………………………………….Myotis lucifugus


3. a. Web footed, water living………………………………………Anas platyrhynchos

b. Not web footed, not water living (go to 4)


4. a. Hovering flight, very small …………………………………….Archilochus colubris

b. Not hovering flight (go to 5)


5. a. Mouse eater, nocturnal…………………………………………Bubo virginianus

b. Insect eater, diurnal……………………………………………..Turdus migratorius


6. a. Hairy or furred (mammalian) (go to 8)

b. Not furred (not mammalian) (go to 7)


7. a. Legs present…………………………………………………………..Rana pipiens

b. Legs absent………………………………………… Thamnophis sirtalis parietalis


8. a. Aquatic mammal…………………………………………………..…Phoco vitulina

b. Terrestrial mammal (go to 9)


9. a. Hopping or jumping locomotion (go to 10)

b. Not hopping or jumping locomotion (go to 11)


10. a. Large with large tail used for balance……………………….…… Macropus rufus

b. Small with small bobbed tail ………………………………………Lepus townsendii


11. a. Large, flat, leathery tail……………………………………….. Castor canadensis

b. Tail not leathery and flat (go to 12)


12. a. Hoofed, vegetation eating (go to 13)

b. Not hoofed, carnivores or omnivores (go to 17)


13. a. Spotted or striped coat (go to 14)

b. No spots or stripes on coat (go to 15)


14. a. Spotted coat, long neck ……………………………………. Giraffa camelopardalis

b. Striped black and white, horse-like…………………………………Equus burchelli


15. a. Can be domesticated……………………………………………..………..Ovis aries

b. Not usually domesticated (go to 16)


16. a. Lives primarily in marshes and forested areas…………………………Alces alces

b. Once numerous on the prairies………………………………………….Bison bison


17. a. Long ringed tail…………………………………………………………Procyon lator

b. Shorter, bobbed tail (go to 18)


18. a. Cat-like……………………………………………………………………Lynx lynx

b. Not cat-like (go to 19)


19. a. Eats eucalyptus leaves, often found in trees………..… Phascolarctos cinereus

b. Not eucalyptus leaf eating (go to 20)


20. a. White coat, northern dwelling………………………………….Ursus maritimus

b. Brown coat, can be found in southern areas…………………….Ursus arctos



Vocabulary:
Aquatic: Living in, on, or near the water

Bobbed: Shortened

Carnivore: Meat-eating

Domesticated: A plant or animal that has been adapted to live with humans.

Hovering: Flying in one place

Locomotion: The act of moving from place to place.

Omnivore: Eatis both animal and vegetable foods

Terrestrial: Living on or growing in the land








Common Name

Scientific Name

1.

Beaver




2.

American Robin




3.

Leopard Frog




4.

Great Horned Owl




5.

Moose




6.

Raccoon




7.

Mallard Duck




8.

Bison




9.

Lynx




10.

Jack Rabbit




11.

Grizzly Bear




12.

Ruby-throated Hummingbird




13.

Domestic Sheep




14.

Red-sided Garter Snake




15.

Little Brown Bat




16.

Polar Bear




17.

Harbor Seal




18.

Giraffe




19.

Plains Zebra




20.

Koala




21.

Red Kangaroo






Answers:






Common Name

Scientific Name

1.

Beaver

Castor Canadensis

2.

American Robin

Turdus migratorius

3.

Leopard Frog

Rana pipiens

4.

Great Horned Owl

Bubo virginianus

5.

Moose

Alces alces

6.

Raccoon

Procyon lator

7.

Mallard Duck

Anas platyrhynchos

8.

Bison

Bison bison

9.

Lynx

Lynx lynx

10.

Jack Rabbit

Lepus townsendii

11.

Grizzly Bear

Ursus arctos

12.

Ruby-throated Hummingbird

Archilochus colubris

13.

Domestic Sheep

Ovis aries

14.

Red-sided Garter Snake

Thamnophis sirtalis parietalis

15.

Little Brown Bat

Myotis lucifugus

16.

Polar Bear

Ursus maritimus

17.

Harbor Seal

Phoco vitulina

18.

Giraffe

Giraffa camelopardalis

19.

Plains Zebra

Equus burchelli

20.

Koala

Phascolarctos cinereus

21.

Red Kangaroo

Macropus rufus


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