Question

A student set up the experiment to determine if radish seeds take in oxygen as they germinate. The purpose of container B in this experiment is to *

A) Serve as a control group to compare the results with container A.
B) Act as a source of oxygen to support the growth of radish seeds.
C) Verify the accuracy of the methylene blue as an oxygen indicator.
D) Monitor the water levels to ensure the experiment's success.

Answer 1

The experiments mentioned involve understanding biological processes like germination, respiration, and photosynthesis, with the control group in an experiment serving to validate the results of the experimental group.

Step-by-step explanation:

The student's experiment setup with radish seeds, tobacco seeds, plant seedlings, and oxygen consumption involves understanding various biological concepts like photosynthesis, germination, plant growth, and respiration. For instance, the function of container B is to serve as a control group to compare the results with container A, thereby validating the experimental results concerning oxygen uptake during germination.

In the case of plant seedlings and radiolabeled minerals, different plant tissues like the xylem would show the presence of labeled minerals due to their role in transporting water and minerals, while the phloem would show the presence of radioactive sucrose resulting from photosynthesis.

Experiments that look at the effect of external factors, such as detergent presence in soil or light availability on plant growth, help in understanding the environmental influences on plant physiology.