A student sets up an investigation by placing a plastic bag over a plant. She secures the plastic bag so that it is completely sealed and nothing can enter. She observes the plant daily to see if it remains green and healthy.
Which TWO questions is this investigation, as described, designed to answer?
a
Can the plant perform respiration without a large supply of oxygen?
b
Can the plant perform photosynthesis faster than a plant that is not sealed?
c
Can the plant perform photosynthesis without a large supply of carbon dioxide?
d
Can the plant perform photosynthesis without a large supply of oxygen?
e
Can the plant perform respiration faster than a plant that is not sealed?
f
Can the plant perform respiration without a large supply of carbon dioxide?
d. Can the plant perform photosynthesis without a large supply of oxygen?
e. Can the plant perform respiration faster than a plant that is not sealed?
The two questions that this investigation is designed to answer are:
1. Can the plant perform photosynthesis without a large supply of carbon dioxide?
2. Can the plant perform respiration without a large supply of oxygen?
The investigation described is designed to answer the following two questions:
a) Can the plant perform respiration without a large supply of oxygen?
d) Can the plant perform photosynthesis without a large supply of oxygen?
To answer these questions, the student is observing the plant daily while it is covered by a completely sealed plastic bag. By sealing the bag, the student is effectively preventing any additional supply of oxygen from entering the system.
Observing the plant's health and color over time will provide insights into its ability to carry out respiration and photosynthesis without a large supply of oxygen. If the plant remains healthy and green, it suggests that it is still capable of performing these processes to some extent even without the external supply of oxygen.