OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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hominins were vegetarians
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increase size of cranium/ skull which is better for balance in bipedalism
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reduction in the amount of teeth in the jaw
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smaller forehead
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Detailed explanation-1: -Hominin evolution is characterized by two main trends, transition to bipedality and increase in brain size.
Detailed explanation-2: -Dental Trends in Early Hominins Trends among early hominins include a reduction in procumbency, reduced hind dentition (molars and premolars), a reduction in canine size (more incisiform with a lack of canine diastema and honing P3), flatter molar cusps, and thicker dental enamel.
Detailed explanation-3: -The evolution of modern humans from our hominid ancestor is commonly considered as having involved four major steps: evolving terrestriality, bipedalism, a large brain (encephalization) and civilization.
Detailed explanation-4: -Developing shorter jaws with smaller teeth By 3.5 million years ago, our ancestors’ teeth were arranged in rows that were slightly wider apart at the back than at the front. By 1.8 million years ago, our ancestors’ canines had become short and relatively blunt like ours. Their jaws had also become much shorter.