There are two groups of primates that can walk upright on two legs. the group that includes gorillas, chimpanzees, bonobos, and humans is called . the group that includes humans and their direct ancestors is called .

The correct answers are:

1. hominoids;

The hominoids are a group of primates which is consisted of large species of monkeys. They are one of the most developed animals on the planet, intelligence wise. The great apes are the closest relatives to the modern humans, and the group of the hominids as a whole.

2. hominids;

Intelligence wise are the most developed group of animals on the planet. They originated from the great apes, but evolved in a totally different manner where they became bipedal, and also developed an extra bone in the thumb, and that enabled them to develop even more, and over time to become the most dominant species on the planet. In this group we have the likes of Australopithecus, Homo habilis, Homo erectus, Homo florensis, Homo sapiens etc.

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