| A | B |
| Chemical Control | Similar to nerve control, chemical control coordinates body processes by transmitting messages from one part of the organism to another |
| Auxins | are one type of plant hormone |
| tropisms | • Unequal distribution of auxins causes unequal growth responses |
| Phototropism | • Growth of a plant towards light due to unequal distribution of auxins |
| Geotropism | Growth of a plant due to gravity |
| Endocrine Glands | Endocrine glands synthesize and secrete hormones which control the activities of animals |
| Metamorphosis | The development in an animal larva that transforms into a sexually mature adult |
| Characteristics of Plant Hormones | • Plant hormone production is most abundant in the tips of roots and stems, buds and seeds |