Question

photosynthesis and cellular respiration
students were asked to set up an experiment. each group was given 4 flasks,
and each flask was set up according the table above. the flasks were sealed
cellular respiration and photosynthesis experiment
flask number contents of flask
1 1 plant
2 2 goldfish
3 1 plant & 2 goldfish
4 nothing

part b
which of these would help reduce the amount of carbon
dioxide produced from your answer to part a?

a. add a plant to the flask

b. add a goldfish to the flask

c. remove a plant from the flask

d. do nothing as the carbon dioxide will
naturally become diluted

Explanation:

To reduce carbon dioxide ($\ce{CO_2}$) production, we need a process that consumes $\ce{CO_2}$. Plants perform photosynthesis, which uses $\ce{CO_2}$ and produces oxygen. Adding a plant (option A) would help as it can take in $\ce{CO_2}$ for photosynthesis. Adding a goldfish (B) would increase respiration and $\ce{CO_2}$ production. Removing a plant (C) would reduce $\ce{CO_2}$ consumption. Doing nothing (D) won't reduce $\ce{CO_2}$ as it doesn't get diluted naturally in a sealed flask. So A is correct.

Answer:

A. Add a plant to the flask