I just took a test in school today. What question was I asked?

Question I was asked: Which of the following structures is not present in animal cells?

I just took a test in school today. What question was I asked?

Question I was asked: Which event occurs on a daily cycle?

I just took a test in school today. What question was I asked?

Question I was asked:
Cindy learned that trees release gases into to the air during photosynthesis. What gas does a tree release?