Why do hormones cause changes only in specific body organs?

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Diffusion and osmosis are forms of passive transport

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants