A Farmer Wishes to Test the Effects of a New

question 66

Multiple Choice

A farmer wishes to test the effects of a new fertilizer on her soybean yield. She has four equal-sized plots ofland-- one with sandy soil, one with rocky soil, one with clay-rich soil, and one with average soil. She divideseach of the four plots into three equal-sized portions and randomly labels them A, B, and C. The four Aportions of land are treated with her old fertilizer. The four B portions are treated with the new fertilizer, andthe four Cʹs are treated with no fertilizer. At harvest time, the soybean yield is recorded for each section of land.What is the treatment in this experiment?

• A) the fertilizers
• B) the soybean yield recorded for each section of land
• C) the section of land (A, B, or C)
• D) the four types of soil

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Definitions:

Ventricular Systole

The phase of the cardiac cycle during which the ventricles contract, pumping blood out of the heart.

Phagocytosis

The process by which cells, such as immune cells, engulf and digest large particles or microorganisms.

White Blood Cells

are cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.

Neutrophils

A type of white blood cell that plays a vital role in the immune system by engulfing and digesting harmful pathogens.