A stem that cannot increase in diameter is lacking what type of tissue?
A. Protoderm
B. Vascular cambium
C. Xylem
D. Procambium
E. Ground meristem
Answer: B
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Use the following study to answer the following question(s): A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 units) to 50 potted tomato plants. All other variables that may affect the outcome (watering, temperature, sunlight, plant size, etc.) are kept the same from pot to pot. At the end of the growing season, the tomatoes grown on each plant are weighed to determine which fertilizer level produced the largest tomato yield.Which variable is the independent variable?
A. The fertilizer amount B. The tomato yield at the end of the growing season C. The plant size at the end of the growing season D. The temperature
Components of vertebrate plasma include
_____ water. _____ red blood cells. _____ white blood cells. _____ oxygen. _____ nutrients.
Fructose and glucose are
a. isotopes. b. monosaccharides. c. disaccharides. d. six-carbon sugars. e. monosaccharides and six-carbon sugars.
If tyrosine and isoleucine undergo condensation, the new bond that is formed is between the:a
oxygen of the R group and the hydrogen of the amino group. b. carbon of the R group and the nitrogen of the amino group. c. carbon of the carboxyl group and the hydrogen of the R group. d. carbon of the carboxyl group and the hydrogen of the amino group. e. carbon of the carboxyl group and the nitrogen of the amino group.