Dichotomous Key Assessment

A 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.

1. a) Abdomen segmented.............go to 2

b) Abdomen not segmented ......go to 4

2. a) Abdomen with tail....................go to 3

b) Abdomen without tail...............go to 5

3. a) Tail with stinger..........................Scorpion

b) Tail without stinger.....................Whip scorpion

4. a) Legs longer than body.............Daddy Long Legs

b) Legs not longer than body……….Wind scorpion

5. a) Covered with spines .......................Mite

b) Few spines.....................................Tick

• Whip Scorpion

• Daddy Long Legs

• Mite

• Tick

To what order does a two pairs of wings, rigid and leathery and mouth for sucking belong to?

• Diptera

• Lepidoptera

• Heteroptera

• Coleoptera

Which of the following characteristics will most likely be helpful in identifying a butterfly using a dichotomous key?

• It migrates north in the summer

• It has long tail

• It likes only certain plants

• Its wings beat very fast in hot weather

Which of the following characteristics would be useful in determining the identify of a tree in a dichotomous key?

• It provides shade

• It has a nest

• It has several birds in it

• Its leaves are long and narrow

Using this dichotomous key, identity the name of the circled fish.

• band-tail puffer

• spotted goat fish

• peacock flounder

• trumpet fish

Identify the fish

• Sebastes serriceps

• Sebastes nebulosus

• Naucrates ductor

• Seriola lalandi

• A

• B

• C

• D

Tags

NGSS.MS-LS4-2

Using this dichotomous key, identify the name of the circled Fish, J.

• peacock flounder

• band-tail puffer

• trumpet fish

• spotted goat fish

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?

• Juniper

• Pine

• Spruce

• Fir

What is the name of bird W?

• Certhidea

• Geospiza

• Camarhynchus

• Platyspiza

Tags

NGSS.MS-LS4-2