Discusses why plant stems grow a certain way when you re-position the tip of the plant and how various experiments led to the conclusion that the reason behind the observation is due to auxin.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Think temperature control is an animal thing? Find out about hot plants. It's a whole new ballgame.
Explains how auxins play a role in both gravitropism and phototropism. Also goes over Darwin's phototropism experiments. Includes a short quiz at the end.