Question

Kali designs a set-up to investigate germinating seeds. She fills a jar with seeds that have soaked in water.

In the jar, she places a beaker that contains a solution of bromothymol blue. Bromothymol blue turns green in the presence of carbon dioxide.

She will record observations on Day 1, wait 24 hours, and record again on Day 2.



Which question has Kali MOST LIKELY asked as she set up this investigation?

a
Do germinating peas release carbon dioxide in the process of respiration?
b
Do germinating peas release oxygen in the process of respiration?
c
Do germinating peas release water in the process of photosynthesis?
d
Do germinating peas absorb water in the process of photosynthesis?

Answer 1

Kali has most likely asked the question:

**a. Do germinating peas release carbon dioxide in the process of respiration?**

This is inferred from the use of bromothymol blue, which indicates the presence of carbon dioxide by changing color. Her investigation is aimed at observing the changes in the solution after 24 hours, which would suggest that she is looking to determine whether the germinating seeds are respiring and releasing carbon dioxide.