Quiz: Plant Growth and Development 2

A stress response where plants may experience severe stress that could lead to death.

• a. susceptible

• b. tolerant

• c. resistant

• d. avoidance

Organic compound synthesized in one part of a plant and translocated to another part where, in very low concentrations, it causes a physiological response.

• a. tropism

• b. edaphic

• d. plant hormone

• d. exogenous rhythms

The only plant hormone that is a gas

• a. auxin

• b. ethylene

• c. cytokinins

• d. gibberellins

A hormone manufactured primarily in the shoot tips, in embryos, and in parts of developing flowers and seeds.

• a. auxin

• b. cytokinin

• c. gibberellins

• d. ethylene

A hormone that stimulates stem elongation

• a. tropism

• b. auxin

• c. gibberellins

• d. cytokinin

Which of the following shows the correct relationship between a hormone and its function?

• a. auxin=stimulates stem elongation

• b. ethylene=fruit maturation

• c. cytokinin=drought tolerance

• d. absisic acid=promote root growth

It is a leaf movement or orientation following the direction of the sun’s ray.

• a. Heliotropism

• b. Geotropism

• c. Hydrotropism

• d. Gravitropism

Nastic movement resulting from contact or mechanical disturbances such as shaking

• a. Heliotropism

• b. Thermonasty

• c. Nyctinasty

• d. Seismonasty

Growth of plant part toward the stimulus

• a. positive tropism

• b. negative tropism

Growth away from gravity

• a. positive geotropism

• b. negative geotropism