This phylogenetic tree indicates that birds are most closely related to _____. (Activity 34A)

This phylogenetic tree indicates that the most recent common ancestors of reptiles, birds, and mammals are _____. (Activity 34A)

Which of these chordate groups lack a post-anal tail and a notochord as adults? (Activity 34A)

The common ancestor of all these chordate groups EXCEPT the _____ probably had paired appendages. (Activity 34A)

Which of these is the only chordate group that has hair? (Activity 34B)

Which of these primate groups is most closely related to hominids? (Activity 34B)

_____ are the oldest known primate group. (Activity 34B)

The primates that spend the most time walking upright are the _____. (Activity 34B)

Which of these anthropoid groups consists of primates who are mostly tree dwellers and whose forelimbs and hind limbs are about equal in length? (Activity 34B)

Which of these primate groups lives in trees in Central and South America and have nostrils that are wide open and far apart? (Activity 34B)

Evidence indicates that _____ was the first hominid to use fire. (Activity 34C)

Which of these hominids was bipedal but had a relatively small brain? (Activity 34C)

Humans are _______. (Activity 34C)

Humans probably evolved from _____. (Activity 34C)

Evidence indicates that _____ was the first hominid to use simple stone tools. (Activity 34C)