Exam 39: Plant Sensory Systems, signals, and Responses

You discover a chemical that inhibits the conversion of starch to sugar and inhibits the breakdown of chlorophyll and cellulose in fruit.Who might be interested in buying this chemical?

Figure 39.2 -Suppose you laid a seedling on its side so that the root was parallel to the ground.Immediately after the change in position,where in the root cells (position A,B,or C in the figure above)would you find the amyloplasts? The answer should be one of the positions show in Figure 39.2

A particular parasitoid is heterozygous for a gene that binds plant pheromones.Which of the following is true of that parasitoid?

The cells that have phosphorylated phototropin receptors elongate in response to blue light.

An eccentric millionaire botanist has offered a $25,000 scholarship to anyone who can successfully get a plant to grow through a vertical maze in complete darkness.The maze is not in a box;the maze is simply drawn on the wall,and the contestants must get their plant to grow in a pattern that matches the path through the maze.You need the money and feel confident that you can accomplish this task.Which of the following techniques will help you succeed?