Exam 37: Plant Signals and Responses to the Environment

If you want to prevent a grass seedling shoot from bending toward light, you should ____. ​

The type of plant hormone primarily responsible for inhibiting leaf abscission is/are ____. ​

Research by Christopher Cullis has shown that ____.

Plant ____ are not known to be influenced by plant hormones.

The most important natural auxin is ____ acid. ​

How might a plant communicate to another plant that it has been attacked by a herbivore? ​

The second messenger inositol triphosphate (IP₃)appears to be involved in stomatal closure triggered by ____. ​

Where is the auxin receptor ABP1 located in plant cells?

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. ​

The plant hormone ____ stimulates stomata to close during a drought.

According to the acid-growth hypothesis, auxin causes increased acidity in cell walls, which then activates ____ that disrupt(s)bonds between cellulose microfibrils, allowing cell expansion.

Fruit ripening is promoted by ____. ​

The plant hormone ____ is a gas at normal temperature and pressure.

After a plant has survived a microbial invasion, the rest of the plant is often less vulnerable to future infections. This is called ____. ​

The plant hormone ____ trigger plant responses to environmental stresses such as cold snaps, high salinity, and drought.

Synthetic compounds similar to ____ are used to prolong the shelf life of vegetables such as lettuces and mushrooms and to keep cut flowers fresh.

When a plant has a hypersensitive response, production of ____ triggers effects such as the expression of PR proteins. ​

Bioactive specialized compounds that function to protect plants from viral, fungal and bacterial pathogens are ____. ​

Imagine that you own a nursery and you want to reduce the chance that plants you ship will suffer from shipping damage. You should you apply ____ to the plants before shipping.