Mammals

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Mammals

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All mammals have hair on their bodies at least one point during their lives. What is the primary function of the hair? *

5 points

Protect against prey

Provide distinction between male and female

Insulation

Increased sensitivity of touch

One distinction of mammals is the number of bones found in the ear. How many bones do nearly all mammals have in each ear? *

5 points

One

Three

Five

Two

Different mammals exhibit all of the following traits EXCEPT one, which trait is that? *

5 points

Have scales

Lay eggs

Have four eyes

Can fly

Mammals are highly social and many predators are pack hunters. Which of the following IS NOT a pack hunter? *

10 points

Coyote

Lion

Orca

Polar Bear

Which of the following mammals DOES NOT have tusks? *

5 points

Walrus

Elephant Seal

Narwhal

Warthog

Which word best describes mammals body heat? *

5 points

Homoeothermic

Poikilothermic

Hypothermic

Hyperthermic

All mammals have the same number of chambers in their hearts. How many chambers is that? *

5 points

Two

Three

Four

Six

The deadliest creature in Africa is the mosquito due to the number of deaths resulting from malaria. What is the deadliest mammal in Africa? *

10 points

Hippopotamus

Water Buffalo

Elephant

Lion

Bats are the only mammals capable of flying. Unlike birds, bats have a thin membrane stretch between bones. Which bones make up the skeletal structure of the bat's wing? *

5 points

Foot Bones

Rib Bones

Collar and Shoulder Bones

Finger Bones

Which of the following mammals has the most sensitive sense of smell? *

5 points

Bloodhound

Orca

Elephant

Horse

In terms of number of species, the order containing bats is second largest (20% of all mammal species) and the order containing shrew and mole species is third (about 10%). What order of mammal contains the largest number of species at around 40% of all mammal species? *

5 points

Primates

Carnivores

Rodents

Marsupials

Many people know the largest mammal is the blue whale, what is the smallest mammal by size (length not mass)? *

5 points

The pygmy shrew

The bumblebee bat

The chinchilla

The naked mole-rat

Approximately how many known mammalian species currently exist on the earth? *

10 points

54,000

540

5,400

54 million

One order of larger mammals is the even-toed ungulates. Which of the following is an example of an even-toed ungulate? *

5 points

Beaver

Kangaroo

Moose

Puma

If giraffes had the same anatomy as humans every time they would lean over to get a drink of water the blood rush to the head would cause them to pass out. What anatomical feature prevents giraffes from passing out when they lean over for a drink of water? *

5 points

A brain that can drastically change size when blood rushes in

Neck muscles that pinch veins and arteries to stop the flow of blood

A heart that can switch the direction of blood flow in the body

One way vein valves to prevent back flow

Many grazing mammals have horizontal bar shaped pupils giving them a very eerie look. What is the benefit of horizontal slit pupils like this? *

5 points

Better long distance viewing than circular pupils.

The eeriness serves to intimidate predators.

Improved eyesight in low light of dusk and dawn.

A wider field of view without sun bleaching occurring.

Some marine mammals such as the beaked whale and elephant seal can dive well over 4,000 feet deep, holding its breath, for two hours or more. What anatomical feature, lacking in humans, makes this possible? *

5 points

High levels of stored oxygen in their muscles.

A gill-like organ that can extract oxygen from the water.

Extremely low metabolisms causing their body to use nearly no oxygen when diving.

The extreme water pressure reduces blood flow causing slower oxygen consumption.

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