Exam 38: Plant Signals and Responses to the Environment

Which plant hormones were first isolated from the pollen of Brassica napus?

Imagine that you own a nursery and you want to reduce the chance that plants you ship will suffer from shipping damage. Which type of plant hormone should you apply to the plants before shipping?

Which type of plant hormone has been shown to both promote pollen tube elongation and inhibit root elongation?

Which plant hormones cause chloroplasts to mature?

Which type of plant hormone promotes fruit ripening?

Placing a ripe apple with other apples that are not ripe will cause the other apples to ripen sooner. Which type of plant hormone is responsible for this effect?

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once. -synthesizing defensive chemicals

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once. -synthesizing protease inhibitors

When a plant becomes infected by pathogenic bacteria or fungi, it may respond by way of a fight or flight response-a defense that cordons off an infection site surrounding it with dead cells.

What happens with P_r and P_fr at night (assuming no artificial lights)?

Creosote bush clusters have been shown to be descendant from single seeds. When did these seeds germinate?

Which of the following would probably NOT promote dormancy in at least some plants?

When a plant has a hypersensitive response, which production triggers effects such as the expression of PR proteins?

What are the usual concentrations of plant hormones that are effective, and what kind of effects do they have on different plant tissues?

Which plant hormone is primarily responsible for inhibiting leaf abscission?

Which of the following correctly describes the patterns of flowering in bearded irises and chrysanthemums?

Why are secondary metabolites termed "secondary"?

You observe a sunflower that moves its leaves so that it tracks the sun across the sky throughout the day, and a sensitive plant that reversibly folds up its leaflets when you touch it. What are both of these examples of?

Which plant signalling compounds are produced from structural elements of the cell wall?

Which synthesis is triggered when cells bind systemin?