Question

Scientists hypothesize that bipedalism started in a more forgiving environment. Species were still arboreal but became bipedal on branches.

a. True
b. False

Answer 1

Bipedalism in early hominins did not start in a more forgiving environment, but in a savanna habitat. Species gradually became bipedal while still arboreal, and this change required complex anatomical reorganization.

Step-by-step explanation:

The statement is False. Scientists hypothesize that bipedalism in early hominins started in a more forgiving environment such as the savanna habitat. While species were still primarily arboreal, they gradually became bipedal on branches. This change in locomotion required complex anatomical reorganization, including a valgus angle in the femur, realignment of the big toe, and spinal curves that balance the weight of the upper body.