The Difference Between Vertical and Horizontal Transmission of Plant Viruses

question 3

Multiple Choice

The difference between vertical and horizontal transmission of plant viruses is that vertical transmission is ________.

• A) transmission of a virus from a parent plant to its progeny, and horizontal transmission is one plant spreading the virus to another plant
• B) the spread of viruses from upper leaves to lower leaves of the plant, and horizontal transmission is the spread of a virus among leaves at the same general level
• C) the spread of viruses from trees and tall plants to bushes and other smaller plants, and horizontal transmission is the spread of viruses among plants of similar size
• D) the transfer of DNA from a plant of one species to a plant of a different species, and horizontal transmission is the spread of viruses among plants of the same species

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