Choose the One Most Appropriate Letter for Each

question 45

Multiple Choice

Choose the one most appropriate letter for each.
-snakes

• A)cartilaginous skeleton; jaws
• B)reptile with four-chambered heart
• C)separate openings for the urinary, reproductive, and excretory systems
• D)legless amphibian
• E)invertebrate chordate; no metamorphosis
• F)endotherm with feathers
• G)limbless reptile
• H)most primitive fishes with jaws; extinct
• I)modern-day parasitic jawless vertebrate
• J)North America's only native marsupial
• K)adults are barrel-shaped and secretes a covering of polysaccharides
• L)egg-laying mammal
• M)swim bladder for buoyancy
• N)larvae typically have gills and develop lungs as they mature

---

Definitions:

Inspiratory Reserve

The additional volume of air that can be inhaled after a typical inhalation.

Expiratory Reserve

The additional volume of air that can be forcibly exhaled after the completion of a normal, controlled exhalation.

Residual Volume

The amount of air left in the lungs after a person has exhaled completely.

Aging

The natural and inevitable process of growing older, characterized by gradual changes in the biological, psychological, and social structures of individuals.