Exam 3 Regulating Growth and Development

IAA (Auxin) is synthesized in all of the following locations EXCEPT:

roots

If the apical meristem of Phaseolus vulgaris is removed and auxin is applied to the cut surface, the growth of _____ is _____.

lateral buds; inhibited

Totipotency refers to the potential of:

a plant cell to give rise to an entire plant.

Crosstalk occurs when

two or more hormones interact to regulate a response in the plant.

Basipetal transport is

directional transport from either the shoot apex towards the soil line or from the root apex towards the soil line.

If you remove the seeds from a strawberry plant,

the fruit shrivels up and dies because there is no auxin being produced to tell the fruit to grow

Cytokinins do all of the following EXCEPT

enforce apical dominance

If you want your bananas to ripen faster, you put them in a paper bag with an apple. Why?

The apples release ethylene, which will trigger ripening in the bananas

If you treat a plant with abscisic acid, then stop watering it what will happen?

the stomata will close, limiting water loss, so the plant will survive longer

Gibberellins overcome seed dormancy by:

stimulating cell elongation.

What happens to seeds if they have too much gibberellic acid (GA) and not enough abscisic acid (ABA)?

They germinated while still attached to the parent plant.

Salicylic Acid kills plant cells. Why would a plant want to kill its own cells?

To prevent the spread of a pathogen (viruses can't hijack a dead cell).

Why do plants release strigolactones into the soil?

To call fungi so they can exchange fixed carbon for nitrogen and phosphorus.

How does jasmonic acid protect plants from insect attack?

Jasmonic acid does all of these.