Choose the One Most Appropriate Letter for Each

question 56

Multiple Choice

Choose the one most appropriate letter for each.
-caecilians

• 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

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Definitions:

Transpiration

How plants transport moisture from their roots to small holes located on the leaf undersides, converting to vapor and then releasing it into the atmosphere.

Xylem

The vascular tissue in plants that conducts water and dissolved nutrients from the roots to the rest of the plant.

Phloem

The portion of a plant's vascular system responsible for transporting sugars and other metabolic products downward from the leaves.

Nitrogen-Fixing Bacteria

Microorganisms capable of converting atmospheric nitrogen into compounds usable by plants.