| A | B |
|---|
| Chemical Control | Similar to nerve control, chemical control coordinates body processes by transmitting messages from one part of the organism to another |
| Plant Hormones | chemicals that affect growth and development |
| Auxins | Plant hormone that influence division and elongation |
| Tropisms | usually adaptive growth responses that enhance the survival of the plants |
| Phototropism | Growth of a plant towards light due to unequal distribution of auxins |
| Geotropism | Growth of a plant due to gravity |
| Chemical Control in Animals | • Chemical control in animals differs from that in plants since animals possess cells specialized solely for hormone production |
| Endocrine | • Endocrine glands synthesize and secrete hormones which control the activities of animals |
| Animal Hormones | Hormones interact and exert control on metabolic activities such as metamorphosis and reproduction |
| Metamorphosis | The development in an animal larva that transforms into a sexually mature adult |
