Final answer:
The wildflower known for its 'explosive' sex life, due to its seed dispersal mechanism, is the Touch-me-not. This plant launches its seeds through an explosive action of the mature seed pods. There is no information provided on whether this species secretes allelopathic chemicals.
Step-by-step explanation:
The wildflower with an "explosive" sex life is C. Touch-me-not (Impatiens species). This plant is known for its seed dispersal mechanism, where the mature seed pods burst open explosively when touched, effectively launching the seeds away from the parent plant. This type of dispersal is known as autochory and ensures that the seeds are spread to new areas, which can prevent crowding and reduce competition among seedlings.
Regarding the chemical compounds question (d), some plant species do release chemicals into the soil to inhibit the growth of others, a phenomenon known as allelopathy. However, the provided information does not specify whether the Touch-me-not engages in this behavior. Allelopathic substances can affect seed germination and plant growth, influencing plant community dynamics.
As for pollination, Figure 18.5 reflects the diversity of flowering plants and how they have evolved with various pollinators. For example, the wide foxglove flower is adapted for pollination by bees, and the long, tube-shaped trumpet creeper flower is adapted for pollination by hummingbirds. Meanwhile, the Coltsfoot plant relies on bees and beetles for pollen transfer.