If the amount of oxygen produced by a plant were measured over a 24-hour period, when would you expect the greatest amount of oxygen to be produced?
A. During nighttime hours
B. During daylight hours
C. During times of high humidity
D. During times of low humidity

B

Explanation:

The correct answer would be during the daylight hours.

The production of oxygen in plants is dependent on photosynthesis, a process that requires the input of light in order to proceed.

This means that oxygen production would ordinarily cease in the absence of light (during nighttime hours) because photosynthesis would not take place and one would expect the greatest amount of oxygen to be produced during the day when photosynthesis is active.

The correct option is B.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.