What type of pest is a mealybug?

A mealybug is classified as a common greenhouse pest that feeds on plant sap. These pests are small, soft-bodied insects that typically appear white or gray, covered in a waxy, filamentous coating. They can cause significant harm to plants because they insert their mouthparts into the plant tissue to extract sap, which can weaken the plant, lead to yellowing leaves, stunted growth, and even plant death if left untreated. Additionally, mealybugs produce honeydew, a sticky substance that can encourage the growth of sooty mold, further compromising plant health.

In contrast, the incorrect options highlight other types of organisms or roles that do not reflect the nature of mealybugs. Beneficial insects in the garden are typically those that help with pollination or natural pest control, enhancing the ecosystem rather than harming plants. An organism that enhances plant growth suggests something like beneficial bacteria or certain insects that positively contribute to plant health and development. Finally, a type of flower indicates an entirely different category within plant taxonomy, which mealybugs do not belong to at all.