Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 34, Problem 27CTQ
Discuss why obesity is agrowing epidemic.
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foraging/diet type
teeth
tongue
stomach
intestines
cecum
Insectivory
numerous, spiky, incisors procumbentExample: moleExample: shrew
--
simple
short
mostly lacking
Myrmecophagy
absent or reduced in numbers, peg-likeExample: tamandua anteater
extremely long
simple, often roughened
short
small or lacking
Terrestrial carnivory
sharp incisors; long, conical canines; often carnassial cheek teeth; may have crushing molarsExample: dog
--
simple
short
small
Aquatic carnivory
homodont, spiky, numerousExample: common dolphin
--
simple or multichambered (cetaceans only)
variable
small or absent
Sanguinivory
very sharp upper incisors; reduced cheek teethExample: vampire bat
grooved
tubular, highly extensible
long
small or lacking
Herbivory (except nectivores)
incisors robust or absent; canines reduced or absent; diastema; cheek teeth enlarged with complex occlusal surfacesExample: beaver
--
simple (hindgut fermenters) or multichambered (ruminants)
long
large
Filter feeding
none…
3. Shown below is the dental formula and digestive tract anatomy of three mammalian species
(A, B, and C). What kind of diet would you expect each species to have? Support your
answers with what you can infer from the dental formula and what you can see in the
diagram. Broadly speaking, what accounts for the differences?
Species A
3/3, 1/1, 4/4, 3/3
པར『ན་
cm 30
Species B
4/3, 1/1, 2/2, 4/4
cm 10
Species C
0/4, 0/0,3/3, 3/3
020
3. Shown below is the dental formula and digestive tract anatomy of three mammalian species
(A, B, and C). What kind of diet would you expect each species to have? Support your
answers with what you can infer from the dental formula and what you can see in the
diagram. Broadly speaking, what accounts for the differences?
Species A
3/3, 1/1, 4/4, 3/3
cm 30
Species B
0/4, 0/0, 3/3, 3/3
cm 10
Species C
4/3, 1/1, 2/2, 4/4
E
0 cm 20
AIL
Chapter 34 Solutions
Biology 2e
Ch. 34 - Figure 34.11 Which of the following statements...Ch. 34 - Figure 34.12 Which of the following statements...Ch. 34 - Figure 34.19 Which of the following statements...Ch. 34 - Which of the following is a pseudo-ruminant? cow...Ch. 34 - Which of the following statements is untrue?...Ch. 34 - The acidic nature of chyme is neutralized by...Ch. 34 - The digestive juices from the liver are delivered...Ch. 34 - A scientist dissects a new species of animal. If...Ch. 34 - Which of the following statements is not true?...Ch. 34 - Which of the following is a water-soluble vitamin?...
Ch. 34 - What is the primary fuel for the body?...Ch. 34 - Excess glucose is stored as fat glucagon glycogen...Ch. 34 - Many distance runners “carb load” the day before a...Ch. 34 - Where does the majority of protein digestion take...Ch. 34 - Lipases are enzymes that breakdown disaccharides...Ch. 34 - Which of the following conditions is most likely...Ch. 34 - Which hormone controls the release of bile from...Ch. 34 - Which hormone stops acid secretion in the stomach?...Ch. 34 - In the famous conditioning experiment, Pavlov...Ch. 34 - How does the polygastric digestive system aid in...Ch. 34 - How do birds digest their food in the absence of...Ch. 34 - What is the role of the accessory organs in...Ch. 34 - Explain how the villi and microvilli aid in...Ch. 34 - Name two components of the digestive system that...Ch. 34 - What are essential nutrients?Ch. 34 - What is the role of minerals in maintaining good...Ch. 34 - Discuss why obesity is agrowing epidemic.Ch. 34 - There are several nations where mal nourishment is...Ch. 34 - Generally describe bow a piece of bread can power...Ch. 34 - In the 1990s fat-free foods became popular among...Ch. 34 - Explain why some dietary lipid is a necessary part...Ch. 34 - The gut microbiome (the bacterial colonies in the...Ch. 34 - Many mammals become ill if they drink milk as...Ch. 34 - Describe how hormones regulate digestionCh. 34 - Describe one or more scenarios where loss of...Ch. 34 - A scientist is studying a model that has a...
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