AP BIOLOGY

Detailed explanation-1: -Chimpanzees have even been observed using two tools: a stick to dig into an ant nest and a “brush” made from grass stems with their teeth to collect the ants.

Detailed explanation-2: -Chimpanzees use simple tools to make tasks such as finding food easier. They sometimes poke a stick or a twig into an ants’ nest or termite mound to catch insects to eat. The insects crawl onto the stick or grab it with their pincers. Then the chimp pulls out the stick and nibbles off the insects.

Detailed explanation-3: -In the wild, some populations of chimpanzees will ‘scoop’ floating algae from the tops of lakes and rivers using sticks and a ‘swiveling’ action of the wrist. As a suspected culture, this behaviour (amongst other chimpanzee tool-use behaviours) has been suggested to be influenced by social learning.

Detailed explanation-4: -Jane Goodall’s famous research on chimpanzees is a classic example of naturalistic observation. Dr. Goodall spent three decades observing chimpanzees in their natural environment in East Africa.

Detailed explanation-5: -No fewer than 22 times, researchers documented wild chimpanzees on an African savanna fashioning sticks into “spears” to hunt small primates called lesser bush babies. In each case a chimpanzee modified a branch by breaking off one or two ends and, frequently, using its teeth to sharpen the stick.