| A | B |
|---|
| Chemical control is achieved through this in both animals and plants | Hormonal action |
| • Unequal distribution of auxins causes unequal growth responses | Tropisms |
| Endocrine glands | Synthesize and secrete hormones which control the activities of animals |
| Chemicals secreted in one area of the body which affect responses in other areas | Hormones |
| Aids in the distribution of these hormones | Circulatory system |
| Metamorphosis | The development in an animal larva that transforms into a sexually mature adult |
| Growth of a plant towards light due to unequal distribution of auxins | Phototropism |
| Growth of a plant due to gravity | Geotropism |
| What can be caused by external stimuli such as light and gravity | Unequal auxin distribution |
| Chemicals that affect growth and development | Plant hormones |
| Influence division, elongation, and differentiation of plant cells | Auxins |
| Chemical control | Coordinates body processes by transmitting messages from one part of the organism to another |
