How do mollusks affect commercial plants?

Mollusks, which include snails and slugs, can significantly affect commercial plants primarily by feeding on their foliage and fruits. This feeding behavior can lead to visible damage such as ragged edges on leaves, holes, and in severe cases, complete defoliation. The impact of this feeding not only reduces the aesthetic appeal of the plants but also compromises their overall health, potentially reducing yields and market value. Additionally, their activity can make plants more susceptible to disease and other pests, further compounding the issue.

The other options do not accurately represent the ecological role of mollusks in relation to commercial plants. While some creatures are known for pollination or aiding in seed production, mollusks are not involved in these processes. The suggestion that they have no impact on plants overlooks the well-documented evidence of their detrimental effects on agricultural crops. Thus, recognizing the damaging influence mollusks can have on commercial plants is crucial for effective pest management strategies.