UNIT5- Human evolution

Question 1

What are Homo Sapiens ancestors?

Answer 1

Ardipithecus Ramidus (Ardi)
Australopithecus Afarensis (Lucy)
Homo Habilis
Homo Erectus

Question 2

Ardipithecus Ramidus (Ardi)

Answer 2

5.8-4.4 MYA
120 cm tall
50kg
350 cm Cubed brain mass
All four limbs through the trees
They have opposing thumbs on there back legs for tree swinging.

Question 3

Australopithecus Afarensis (Lucy)

Answer 3

4.4-2.4 MYA
107 cm tall
28kg
400cm Cubed brain mass
Could walk upright and with all four limbs
Can Travel through trees

Question 4

Homo Habilis

Answer 4

2.4-1.9 MYA
110 cm tall
32kg
550cm Cubed brain mass
Short and upright
still long arms for tree movement

Question 5

Homo Erectus

Answer 5

1.9-1.5 MYA
140 cm tall
55kg
850cm cubed brain mass
Shorter arms- they didn’t move through the trees. No opposable thumb on the back legs

Question 6

Homo Sapien 3 million years ago

Answer 6

3 million years ago
170 cm tall
80kg
1250 cm cubed brain mass
completely bipedal (walks on two legs)
Shorter arms.

Question 7

What is the evidence for evolution?

Answer 7

Fossilised footprint-
skeleton fossils
skull fossils
stone tools
DNA

Question 8

Why do we all look different?

Answer 8

Variation among humans allows us to survive in different environments.

Question 9

Why do we have different skin tones

Answer 9

Dark skin & hair provides UV ray protection in sunny climates.
Light skin & hair allows vitamin D absorption in
less sun.