Question

identifying aliens with a dichotomous key
look carefully at the aliens pictured below. use the dichotomous key to find the scientific name for each one
1 a mouth open
b mouth not open go to 2
go to 4
2 a arms
b no arms go to 3
alienus quadlegicus
3 a hairy
b not hairy alienus baricus
alienus trichopticus
4 a no horns
b horns go to 5
alienus strigicus
5 a no legs
b legs alienus bloticus
alienus fuzzocus
write your answers below
each of these aliens belongs to the same genus. what is their genus?
look at the species name for each alien. how do you think these names were chosen?

Explanation:

Step1: Identify first alien

Mouth is open, so go to 2. Has arms, so go to 3. Is not hairy, so it is Alienus trichopticus.

Step2: Identify second alien

Mouth is open, go to 2. Has arms, go to 3. Is hairy, so it is Alienus hirsicus.

Step3: Identify third alien

Mouth is not open, go to 4. Has no horns, go to 5. Has no legs, so it is Alienus slidicus.

Step4: Identify fourth alien

Mouth is not open, go to 4. Has horns, so it is Alienus strictus.

Step5: Identify fifth alien

Mouth is not open, go to 4. Has no horns, go to 5. Has legs, so it is Alienus futzicus.

Step6: Identify sixth alien

Mouth is open, go to 2. Has arms, go to 3. Is hairy, so it is Alienus hirsicus.

Answer:

Alienus trichopticus
Alienus hirsicus
Alienus slidicus
Alienus strictus
Alienus futzicus
Alienus hirsicus