Exam 36: Regulation of Plant Growth

If you had a friend who was involved in brewing beer at home, you could play a practical joke on him by spraying his barley seeds with a substance that inhibits the action of _______ to prevent the seeds from converting stored starch into sugars.

_______ is the state in which a seed is prevented from germinating even when conditions are favorable.

Refer to the figure below. The phenomenon shown in the image was first studied by the Darwins.It is called _______ and is mediated by the hormone auxin.

Refer to the figure below, showing lettuce seeds exposed to different light regimes. Both sets of lettuce seeds were exposed to red light.The lettuce seeds on the right were subsequently exposed to _______.

The two isomers of the photoreceptor are called _______.

In their experiment with grass coleoptiles, Charles and Francis Darwin observed that the photoreceptor was _______, and the bending took place _______.