Human Evolution Flashcards

Front

What animal is believed to be the ancestor of humans?

Back

A tree dwelling shrew-like animal.

Front

During which epoch did the process of human evolution begin?

Back

Palaeocene epoch.

Front

What major evolutionary trends are considered in the transition from ape to man?

Back

Increase in brain size and complexity, cranial capacity, bipedal locomotion, opposable thumb, erect posture, shortening of forelimbs and lengthening of hind limbs, development of chin, broadening of pelvic girdle, development of lumbar curvature, social and cultural development.

Front

What are some major changes that took place in the evolution of man?

Back

1) Increase in size and complexity of brain and enhanced intelligence. 2) Increase in cranial capacity. 3) Bipedal locomotion. 4) Opposable thumb. 5) Erect posture. 6) Shortening of forelimbs and lengthening of hind limbs. 7) Development of chin. 8) Broadening of pelvic girdle. 9) Development of lumbar curvature. 10) Social and cultural development.

Front

How did cranial capacity change over time in human evolution?

Back

Cranial capacity increased over a period of time, with a large size of the frontal lobe contributing to the development of a high forehead.

Front

What role did the opposable thumb play in human evolution?

Back

It allowed for better utilization of hands for holding objects effectively and development of motor skills.

Front

What advantages did bipedal locomotion provide to early humans?

Back

It allowed for upright posture and stereoscopic vision, helping man to move around safely on land.

Front

How was the evolutionary history of man traced?

Back

Through fossil remains found over a period of time.

Front

What does the table mentioned in the text show about ancestral humans?

Back

It shows the gradual increase in cranial capacity, shape of skull, and dentition of ancestral humans.