Question

1.What are the consequences of large brain size in primates?

Group of answer choices

Early infant development leading to a decrease in investment in offspring

Decreased relative body size for faster movement

Complex social interaction and increased investment in offspring.

Increased ability to live solitary in territories.

2.

Having twins is rare for non-human primates unless they are in a _____ social grouping

One female, multi-male

One male, multi-female

Solitary

Multi-male, multi-female

3.

In non-human primate groups, when individuals other than parents interact with infants, it is known as:

Grooming

Kidnapping

Step Parenting

Alloparenting

4.

In your lab, Aegyptipthecus, an Oligocene primate, was compared to Old World monkeys. The two groups had different lower molar morphology. The ancestral morphology in Aegyptipthecus, or _____ is different from the _____ lower molar morphology seen in Old World monkeys.

Y-5, bilophodont

Bilophodont, tooth comb

Bilophodont, Y-5

5.

You find a monkey skeleton with short limbs of equal length and a long tail. What type of locomotion did this monkey species most likely use?

Knuckle-walking

Terrestrial Quadupedalism

Brachiation

Arboreal Quadrupedalism

Y-5, tooth comb

Answer 1

Q1. The large brain size in primates is because Complex social interaction and increased investment in offspring, The bigger the social group, the more complex the social interactions, leading to the evolution of larger brains.

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