The Figure Below Illustrates the Results of a Laboratory Experiment

question 18

Multiple Choice

The figure below illustrates the results of a laboratory experiment that simulates potted irises being exposed to differing lengths of darkness.
How would flowering in these irises be affected by disrupting the length of their light exposure?

• A) It would stimulate flowering.
• B) It would suppress flowering.
• C) It would stimulate branching and increase total flower production.
• D) There would be no effect since irises use the length of darkness to coordinate flowering.

---

Definitions:

Proteins

Large, complex molecules essential for the structure, function, and regulation of the body's cells, tissues, and organs.

Plasma Membrane

The lipid bilayer membrane that surrounds a cell, controlling the movement of substances in and out of the cell.

Carbohydrates

Biomolecules consisting of carbon, hydrogen, and oxygen atoms, which are major sources of energy in the diet and are found in foods like grains, fruits, and vegetables.

Aerobic Respiration

A cellular process in which oxygen is used to metabolize glucose, producing ATP, the primary energy currency in cells, along with carbon dioxide and water as byproducts.