Ch. 30 L. 1 Mammalian Characteristics

Ch. 30 L. 1 Mammalian Characteristics

Review the notes and record them in your science binder. Answer the review questions as you go.

Multiple Choice

Which is the purpose of mammary glands?

• They provide milk to nourish newly born mammal young.

• They provide milk to nourish the developing mammal fetus.

• They secrete fluids to stimulate milk production in mammal mothers.

• They secrete fluids to stimulate the desire for milk in young mammals.

Multiple Choice

Which are the two distinctive characteristics shared by all mammals?

• developed brain and mammary glands

• mammary glands and hair

• similar teeth and metabolism

• specialized teeth and digestive system

Multiple Choice

Using the three following examples; what is the correct sequence for the hair functions?

1- a fox’s fur traps body heat.

2- a white-tailed deer raises its tail to show the white underside for others to follow.

3- a seal uses its sensitive whiskers to track prey.

• insulation – camouflage – sensory devices

• insulation – defense– signaling

• defense – camouflage – signaling

• insulation - signaling - sensory devices

Multiple Choice

Which of the following does not describe a primary function of hair?

• sensory device

• movement

• waterproofing

• insulation

Multiple Choice

Teeth that have multiple cusps (edges) for shearing, slicing, crushing, grinding; do not fall out (adult teeth only)

• incisors

• canines

• molars

• pre-molars

Multiple Choice

Long, cone-shaped teeth for piercing flesh

• incisors

• canines

• molars

• pre-molars

Multiple Choice

Under what circumstances would blood vessels near the surface dilate and deliver more blood than usual?

• when body temperature increases

• when body temperature decreases

• when there is too little oxygen in the blood

• when blood vessels contract

Multiple Choice

Which are the four types of mammalian teeth?

• canines, incisors, grinding molars, cutting molars

• canines, incisors, molars, premolars

• fangs, canines, molars, premolars

• fangs, incisors, grinding molars, cutting molars

Multiple Choice

Which explains why a rabbit has a longer digestive system than a hedgehog of similar size?

• More active mammals such as rabbits require a longer digestive system.

• Plant materials eaten by herbivores take longer to digest than insects.

• Rabbits have a higher metabolic rate, requiring more energy from foods.

• The omnivorous diet of a hedgehog is easier to digest than plants.

Multiple Choice

Which of the following can biologists learn about mammals from studying their teeth?

• defense behaviors of specific mammal species

• habitats occupied by different mammal groups

• possible diets of different groups of mammals

• similarities between mammals and other vertebrates

Multiple Choice

In mammals known as ruminants, grass is partially digested into a material called cud in the

• first and second chamber of a four-chambered stomach.

• first chamber of a three-chambered stomach.

• third and fourth chamber of a four-chambered stomach.

• third chamber of a three-chambered stomach.

Multiple Choice

Which trophic category includes humans?

• carnivore

• herbivore

• insectivore

• omnivore

Multiple Choice

Animals that feed on both plants and other animals are called ____.

• omnivores

• insectivores

• carnivores

• herbivores

Multiple Choice

Diaphragm flattens as it contracts. This followed by

• Chest cavity enlarges, Air flows into the lungs.

• Chest cavity become smaller, Air flows into the lungs.

• Chest cavity enlarges, Air flows out of the lungs.

• Chest cavity become smaller, Air flows out of the lungs.

Multiple Select

What does the picture on the right show? Choose all the correct answers.

• exhalation caused by the diaphragm

• inhalation caused by the diaphragm

• intake of carbon dioxide

• removing of carbon dioxide

Multiple Choice

Which of the brain regions marked on the diagram below is the frontal lobe?

• A

• B

• C

• D

Multiple Choice

Which of the following is not a beneficial result of a highly developed cerebrum?

• mother fox teaching young survival skills

• squirrels' balance and coordination

• mother tiger teaching young to hunt

• mice remembering layout of habitat

Multiple Choice

The illustration shows four lobes of the human brain. What lobe is designated by label 2?

• temporal lobe

• parietal lobe

• occipital lobe

• frontal lobe

Multiple Choice

Secrete sweat to help keep mammals cool; found mostly in hairless regions

• sweat glands

• sebacious glands

• mammary glands

• scent glands

Multiple Choice

Which structure provides food and oxygen and

removes wastes from developing young?

• uterus

• placenta

• diaphragm

• mammary glands

Multiple Choice

The amount of time the young stay in the uterus before they are born is called.

• gestation

• placenta

• diaphragm

• uterus