Duplicate of Primates

All living primates except ______ have a big toe that's widely separated from the other toes.

_____ have a larger brain in proportion to their body size and their behavior is more flexible.

Opposable thumbs mean primates can touch the ___ surface of the fingertips of all four fingers.

Humans are members of the ___________ group.

Primates exhibit relatively well-developed parental care and complex social behavior.

Overlapping visual fields of two forward-facing eyes enhance depth perception, an obvious ____.

Most monkeys in both groups are nocturnal, active during the night.

Many of the characteristics of primates are adaptations to the demands of living in ________.

Social organization varies among the apes; gorillas and chimpanzees are highly antisocial.

All primates have a thumb that is relatively movable and separate from the fingers.

Three main groups of living primates include 1 - the lemurs, 2 - the tarsiers, and 3 - _______.

Monkeys do not form a clade but consist of two groups, the New and Old World monkeys.

Main characteristics of primates include __________.

All living apes have relatively long arms, short legs, and no tail.

The earliest known primates were _____.

_________ are the largest apes.

Primates include lemurs, tarsiers, monkeys, and apes.

In ___, a distinctive bone structure at the base of the thumb is used for precise manipulation.