The Presence of Ozone in the Upper Atmosphere Is Important

question 5

Multiple Choice

The presence of ozone in the upper atmosphere is important because

• A) O₃ absorbs outgoing radiation from the earth's surface, thus helping to keep the earth warm.
• B) O₃ absorbs harmful solar radiation.
• C) O₃ dissolves in water droplets and is very reactive.
• D) O₃ is a major reactant in photosynthesis.

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Definitions:

Megaphylls

Leaves with a highly branched vascular system, characteristic of most modern plants, contrasted with microphylls of some ancient lineages.

Woody Tissue

Plant tissue composed mainly of xylem, providing structural support and conduction of water and nutrients; commonly found in trees and shrubs.

Basal Angiosperm

refers to the earliest diverging groups of flowering plants, sharing some ancestral characteristics distinct from most modern flowers.

Star Anise

An aromatic spice that comes from the fruit of the Illicium verum tree, characterized by its star shape and licorice-like flavor.