What beneficial role do viruses play in the environment?

What beneficial role do viruses play in the environment?

• A. Decomposing organic matter
• B. Integrating into plant genomes to increase drought tolerance
• C. Providing nutrients to soil bacteria
• D. Acting as natural pesticides for crops

Answer: (B)

Viruses can play a beneficial role in the environment by integrating into plant genomes to enhance traits such as drought tolerance. This process is part of a larger interaction known as horizontal gene transfer, where genetic material can be transferred between organisms, including from viruses to plants. By integrating beneficial genes, viruses can facilitate adaptations that allow plants to cope better with environmental stresses, such as water scarcity. This kind of genetic engineering can improve plant resilience and overall survival in challenging climates.

The other choices, while they do recognize important ecological processes, do not specifically highlight the direct beneficial interaction involving viruses integrating into genomes for enhancing plant functions. Decomposing organic matter is primarily the role of bacteria and fungi, while providing nutrients to soil bacteria refers to processes involving organic matter decomposition. Acting as natural pesticides is a function that can be attributed more to specific types of beneficial bacteria or other natural agents rather than viruses themselves.