Which product is an example of chemical control used against weeds?

• A. Round Up
• B. Hand-pulling
• C. Pruning
• D. Mowing

Answer: (A)

Chemical weed control uses a pesticide product to kill weeds rather than physically removing them. Round Up is a chemical herbicide, a pesticide designed to kill plants. It works by being absorbed through the leaves and moving through the plant to the roots, so it can kill the whole plant. Because it’s a chemical approach, it’s used specifically to reduce or eliminate weed growth.

In contrast, the other options are physical or mechanical methods: hand-pulling removes weeds by hand without applying any chemical, pruning trims back or removes parts of plants, and mowing cuts the tops of plants. None of these introduce a chemical into the plant system. They rely on physical removal or suppression rather than chemical action.