Figure 19.22 -In Figure 19.22 What Was the Dependent Variable

question 34

Multiple Choice

figure 19.22
-In figure 19.22 what was the dependent variable?

• A)The age of the leaf
• B)The percent of the leaf area damaged
• C)The presence or absence of endophyte spores
• D)The presence or absence of the pathogen Phytophthora
• E)The percent of the leaf area containing endophytes

---

Definitions:

Thylakoid Lumen

The internal space enclosed by the thylakoid membrane within the chloroplasts, where the light-dependent reactions of photosynthesis take place.

Grana

Stacked membranous structures within chloroplasts that contain chlorophyll, where the light-dependent reactions of photosynthesis occur.

Photosynthesis

A process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.

Oxygen Atoms

Fundamental components of molecules, essential for respiration in organisms and a key element in the Earth's atmosphere.