A student set up an experiment to test if plants give off water vapor. Fifty pea plants, growing in pots, were covered with individual glass containers and left overnight. The next morning, the inside of each lid was covered in droplets of water. The lab student concluded that plants generally give off water vapor. What critique would you make of the experimental design?

A. The student did not have a clearly stated hypothesis before beginning the experiment.
B. There was no control so the water could have come from other sources such as air in the jar or the soil.
C. The experiment was not precise, meaning it was not reproducible.
D. There was not a large enough sample of pea plants used to get adequate data.


Answer: B

Biology & Microbiology

You might also like to view...

Some of the intestinal symptoms elicited by pathogens such as Salmonella, Shigella, and Escherichia are due to the presence of

A) pseudomurein. B) S-layers. C) lipopolysaccharides. D) peptidoglycan.

Biology & Microbiology

Mad cow disease is caused by a  

A.  bacterium. B.  virus. C.  viroid. D.  virion. E.  prion.

Biology & Microbiology

About 10-20% of patients with Leigh Syndrome, a mitochondrial disease, have a mutation in MT-ATP6, a gene that

codes for ATP synthase. These patients often experience high levels of _____ in their cells due to an increase in levels of pyruvate that are unable to convert to acetyl-CoA.

a. NADH b. FADH2 c. lactate d. ethanol e. carbon dioxide

Biology & Microbiology

________ competition occurs when some competing individuals obtain enough resources for themselves while denying resources to others

Fill in the blank(s) with correct word

Biology & Microbiology