Exam 46: Plant Responses to the Environment

Most scientists believe that the lateral buds nearest the top of a tree are most inhibited from sprouting because they

The hormone__________ was named after the fungus that causes ?foolish seedling? disease in rice.

The synthetic herbicide 2,4-D is actually a(n)

Senescence in plants usually involves

Plants that flower in the United States in July (when nights are short) are__________ plants.

What mechanisms do plants use to discourage predation?

A botanist who wants to stimulate flower formation in response to light cues could treat the plants with

How a plant cell responds to a hormone depends on the

The two hormones involved in seed germination and seed dormancy are

Venus flytraps catch insects in order to supplement their input of

Abscisic acid enforces dormancy of seeds by

When auxin accumulates on the lower side of the root of a germinating seed, it

Auxin

Why do bananas in a bag ripen so much faster than bananas on a counter top?

If you were running a tree nursery and wanted to keep your trees dormant until the customer could plant them, which hormone would you spray on the trees?

A species-specific ratio of __________produced in the apical meristem and __________produced in the root tips maintains a balance between shoot and root growth.

After seeds were planted, some of the seedlings did not emerge from the soil. Is it possible they did not grow because some of the seeds were planted upside down?

__________triggers the formation of weak-celled abscission layers in leaves and fruits, allowing them to drop off at appropriate times during the year.

In the late winter, as seeds prepare to germinate, the levels of __________in seeds should be declining as the levels of __________are increasing.

The phytochrome Pr