Question 1

Living lemurs are found only in

Accepted Answer

Living lemurs are endemic (found only) to the island of Madagascar, off the southeastern coast of Africa.

Question 2

________ is a fist-like grip in which the fingers and thumbs wrap around an object in opposite directions.

Accepted Answer

The power grip is a fist-like grip in which the fingers and thumbs wrap around an object in opposite directions, providing a firm hold and generating maximum force. The hammer grip is a grip used when holding a hammer, where the handle is placed in the palm with the fingers wrapped around it. The knitting grip and precision grip are specific grips used for activities such as knitting and writing, respectively.

Question 3

Sagittal crests are pronounced in some primates with highly developed ________ .

Accepted Answer

Sagittal crests are bony ridges that run along the top of the skull from front to back. They typically serve as an attachment site for the large temporalis muscles responsible for chewing. Therefore, sagittal crests are more pronounced in primates with highly developed masticatory muscles, such as herbivorous gorillas and orangutans.

Question 4

The nose structure in all primates

Accepted Answer

Primates generally have a flatter nose structure compared to other mammals like dogs, which is associated with a decreased reliance on the sense of smell.

Question 5

While at the zoo you see an exhibit with a small group of primates you have not seen in your textbook.However you notice they have wet, snout-like noses similar to a dog's.You tell your friend that this is

Accepted Answer

The retention of a wet, snout-like nose, commonly referred to as a rhinarium, is a characteristic of prosimian primates. Anthropoid primates, which include monkeys, apes, and humans, have lost this characteristic. Platyrhine primates, also known as New World monkeys, have nostrils that are widely separated and point to the side, rather than downward like Old World monkeys and apes. Therefore, the best choice is A, a species of prosimian primate, because of the presence of a rhinarium.

Question 6

In comparison to Prosimians, anthropoids

Accepted Answer

Anthropoids, which include monkeys, apes, and humans, generally have a reduced sense of smell compared to prosimians, as they rely more on vision.

Question 7

Suspensory primates generally have what type of body structure?

Accepted Answer

Suspensory primates, such as orangutans and gibbons, have longer arms than legs. This adaptation allows them to move efficiently through the forest canopy by suspending themselves from tree branches.

Question 8

The suborder Prosimians includes

Accepted Answer

The suborder Prosimians includes galagos, lorises, tarsiers, and lemurs.

Question 9

The tarsiers belong to the taxonomic suborder of

Accepted Answer

Tarsiers belong to the taxonomic suborder Prosimii, which includes non-monkey primates such as lemurs, lorises, and bushbabies. Anthropoidea includes monkeys, apes, and humans, while sapiens and Homo refer specifically to the human species.

Question 10

Because of the enhanced sense of touch, most primate species have

Accepted Answer

Most primates have evolved nails instead of claws on all limbs, which enhances their sense of touch and allows for better manipulation of objects.

Question 11

Primates' enhanced sense of vision stems from

Accepted Answer

Primates have eyes that are rotated forward, which allows for better depth perception and the ability to judge distances. Additionally, many species of primates, including humans, have color vision, which is an advantage when foraging for ripe fruit or identifying predators. Therefore, the enhanced sense of vision in primates is due to both eyes rotated forward and color vision.

Question 12

The genetic classification for apes and humans

Accepted Answer

The genetic classification for apes and humans includes three subfamilies within hominids: pongines (orangutans), gorillines (gorillas), and hominines (humans and chimpanzees).

Question 13

Modern primates are characterized by arboreal adaptations including

Accepted Answer

Modern primates are characterized by arboreal adaptations such as opposable thumbs, which allow them to grasp and manipulate objects effectively in a tree-dwelling environment.

Question 14

Unlike monkeys, apes

Accepted Answer

The answer of Unlike monkeys, apes
...

Question 15

Which of the following are prosimians?

Accepted Answer

Prosimians are a group of primates that includes lemurs, lorises, bushbabies, and aye-ayes. Baboons and gibbons are not prosimians as they are monkeys and apes respectively. Tamarins are also not prosimians as they belong to the New World monkey family.

Question 16

Primate dietary adaptation is facilitated by

Accepted Answer

Primates have four functionally distinctive tooth types (incisors, canines, premolars, and molars) that allow them to process a variety of foods, aiding in dietary adaptation.

Question 17

The two suborders of primates are

Accepted Answer

The two suborders of primates are prosimians and anthropoids. Platyrrhine and catarrhine refer to the types of noses found in anthropoid primates, while pongidae and hominidae refer specifically to great apes and humans within the anthropoid suborder. Tarsiers are a type of prosimian primate.

Question 18

Suspensory locomotion is characteristic of which primate?

Accepted Answer

Gibbons are the only primates that use suspensory locomotion as their primary mode of movement. They have unique physical adaptations such as elongated arms, long fingers and a specialized wrist joint that allows them to swing through branches in a motion called brachiation. Macaques, vervets and baboons are all terrestrial primates that move around on all fours or walk on two legs.

Question 19

Anthropoids include

Accepted Answer

Anthropoids are a group of primates that includes monkeys, apes, and humans. Choice B includes only African and Asian apes, while choice C includes tarsiers, which are not considered anthropoids. Choice D includes primates that are not anthropoids at all.

Question 20

Primate females

Accepted Answer

Primate females generally give birth to fewer offspring than many other mammals. This is because primates have longer gestation periods and invest more time and energy in individual offspring, which limits the number of offspring they can produce.

Quiz 6: Biology in the Present: The Other Living Primates