Why do plants produce more carbon dioxide than oxygen during the night?
o
a. respiration can happen without sunlight, but photosynthesis
cannot.
b. respiration can only occur when there is no available sunlight.
o
o
c. photosynthesis only produces carbon dioxide during the night.
o
d. respiration produces oxygen during the day and carbon dioxide at
night.

During daylight hours, plants take in carbon dioxide and release oxygen through photosynthesis, and at night only about half that carbon is then released through respiration. However, plants still remain a net carbon sink, meaning they absorb more than they emit.

The answer is A. Respiration can happen without sunlight, but photosynthesis cannot.

Hope it helps!

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.