True or False: Plants that contain toxic oils become nontoxic as soon as they are cut down.

The statement is false because cutting down plants that contain toxic oils does not eliminate their toxicity. In many cases, the toxic oils remain present within the plant's tissues even after the plant has been cut. This is especially true for plants whose toxins are chemical constituents that persist after harvesting.

Certain plants, like poison ivy or certain types of conifers, produce toxic resins or oils that can still be harmful if contact is made, regardless of whether the plants are alive or dead. Therefore, even after being cut down, the potential for exposure to these toxins persists, maintaining the plant's harmful qualities.

Understanding the properties of botanical toxins and the behavior of various plants after being cut is crucial for safety in environments where these plants are present.