Question

a. roots b. stems c. leaves
explain how the data from this experiment supports the claim that the ailanthus plant has allelopathic chemicals.

Explanation:

To determine how the experiment's data supports the claim about Ailanthus' allelopathic chemicals, we analyze the effect of the plant's parts (roots, stems, leaves) on other plants. Allelopathy means a plant releases chemicals that inhibit other plants' growth. If the experiment shows that when exposed to Ailanthus' parts (e.g., roots, stems, or leaves), the growth (like germination rate, root length, etc.) of neighboring plants is reduced compared to a control (no Ailanthus parts), that data supports the claim. For example, if seeds near Ailanthus roots germinate less or grow slower than those in a control group, it suggests the roots release allelopathic chemicals that hinder growth. The data (though not fully shown here) likely indicates that the presence of Ailanthus plant parts (maybe roots, as option a is circled) led to decreased growth of other plants, implying the release of allelopathic chemicals from those parts.

Answer:

To support the claim that Ailanthus has allelopathic chemicals, the experiment’s data likely shows that the presence of Ailanthus plant parts (e.g., roots, as circled) reduced the growth (e.g., germination, root length, or biomass) of neighboring plants compared to a control group (without Ailanthus parts). This growth inhibition indicates the plant parts released chemicals (allelopathic) that suppressed other plants’ growth, as allelopathy involves one plant releasing chemicals to inhibit others. For instance, if seeds near Ailanthus roots germinated less or grew slower than in the control, it confirms the roots (or other parts) released allelopathic chemicals.