List I | List II |
---|---|
(A) Shoulder | (I) Tarsals |
(B) Thigh | (II) Carpals |
(C) Wrist | (III) Humerus |
(D) Ankle | (IV) Femur |
- The shoulder is associated with the humerus, a long bone involved in upper arm movement.
- The thigh involves the femur, the longest and strongest bone in the body.
- The wrist consists of carpal bones, small bones that provide flexibility to the hand.
- The ankle comprises tarsal bones, which form the skeletal structure of the foot’s proximal region.
In a deer species that lives in groups, some individuals act as sentinels and are vigilant for predators but there is a trade-off between foraging and vigilance. A researcher collects data on the foraging rates of edge (black) and central (grey) members of the group in two similar forests, one with and one without predators. Which one of the following figures best supports the hypothesis that members at the edge are acting as sentinels in this deer species?