Question

Which of the following is NOT true of the vervet monkey and tufted titmouse alarm call systems?

		Variation in calls is associated with variation in the behavior of receivers.
		All individuals seek shelter when they hear an alarm call.
		Calls vary depending on the predator observed.
		Their alarm calls are unique vocalizations.

Answer 1

Answer: Option 2. All individuals seek shelter when they hear an alarm call.

Explanation: Vervet monkeys do not immediately seek shelter as soon as they hear an alarm call instead they verify the alarm call by looking for the danger. On the other hand, tufted tit mouse do no seek shelter on hearing alarm call, they attack aggresively against the predator. Thus, the given statement opposes the behavior of both vervet monkeys and tit mouse.

Thus, Option 2 is the correct answer.

Variation in calls is associated with variation in the behavior of receivers in both vervet monkeys, tit mouse. For example, they give false alarms to avoid potential altercation with other members in the group. Thus, Option 1 is not the correct answer.

Calls vary depending on the predator observed in given two groups. For example, the calls for different predators like leopard, snake, birds vary which signifies the magnitude of threat and alerts the other members. Thus, Option 3 is also incorrect.

Alarm calls in the given members of vervet monkeys, tit mouse are different vocalizations (different sounds) to alert the troops regarding the predators. Hence, this also a true statement and Option 4 is incorrect.