When did Byron's bodily functions slow down

Look at the photo of the leaf. which term best describes this leaf?

What would most likely happen if green plants were exposed to longer days of sunlight? a. the mitochondria would produce less energy . b. the chloroplasts would produce more energy. c. the cell wall would become thicker. d. the vacuoles would quickly shrink.b. the chloroplasts would produce more energy.

Fredrick griffith made a scientific discovery in 1928