| A | B |
|---|
| Chemical Control | Coordinates body processes by transmitting messages from one part of the organism to another |
| Hormonal action | Both plants and animals |
| Auxins | One type of plant hormone |
| Tropisms | Unequal distribution of auxins causes unequal growth responses |
| Two Types | Phototropism and Geotropism |
| 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 |
| Role of 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 |
