BIOL1307 Chapter 34 Dr.O'Neal sp25

What is the main function of digestion?

• To store food for future use

• To break down macromolecules into smaller molecules for absorption

• To eliminate waste only

• To increase body temperature

Herbivores are animals that primarily consume:

• Meat

• Both plant and animal material

• Plant material

• Fungi

Which of the following is not a classification of herbivores?

• Frugivores

• Granivores

• Carnivores

• Nectivores

What differentiates obligate carnivores from facultative carnivores?

• Obligate carnivores eat only animal flesh, while facultative carnivores also eat non-animal food

• Facultative carnivores eat only animal flesh

• Obligate carnivores eat plants exclusively

• Facultative carnivores rely entirely on scavenging

Which type of digestive system do birds have?

• A single-chambered stomach

• A four-compartment stomach

• A two-chambered stomach with a proventriculus and gizzard

• A gastrovascular cavity

Which of the following is not a purpose of the gizzard in birds?

• To store food

• To mechanically grind food

• To digest fats using bile

• To soak food

In ruminants, which stomach compartment is considered the "true stomach" where gastric juices are secreted?

• Rumen

• Reticulum

• Omasum

• Abomasum

What is the primary function of the oral cavity in digestion?

• To store food for long periods

• To break down proteins

• To break food into smaller particles

• To transport nutrients directly into the bloodstream

What enzyme found in saliva helps break down starch into maltose?

• Pepsin

• Lipase

• Salivary amylase

• Trypsin

What structure prevents food from entering the trachea during swallowing?

• Esophagus

• Pharynx

• Epiglottis

• Uvula