While apes andmonkeysare bothprimates, and are part of the same primatesuborder, there are lots of differences between them. There are also lots of other sorts of primates. The distinction between different primate groups is­ based on physical characteristics andevolutionaryancestry.

Theorderof primates is characterized by animals with forward-facingeyesand highly flexible arms, legs and fingers. This body structure evolved as an adaptation for life in the trees: Primates have flexible limbs and grasping hands so they can move from branch to branch. The forward-facing eyes are also an adaptation for life in this environment: They give primates excellentdepth perception, allowing them to accurately judge the distance between trees.

1.they lay egg. 2. there is outside covering of feathers. 3 all birds fall in this group 1. they give births to young ones. 2.they have mammary glands for production of milk for their young ones. 3.examples human rats cat.