Interpret Photosynthesis Energy Flow Models Practice Test

A model includes two connected boxes:

Photosynthesis → produces glucose + O$_2$ → Cellular Respiration → produces CO$_2$ + H$_2$O + ATP

The model also shows an arrow from the Sun into Photosynthesis labeled “light energy.” Which statement best describes the energy flow shown?

A model includes two arrows leaving the Cellular Respiration box: one to “ATP/usable energy for cellular work” and one to “heat to environment.” What does this indicate about energy after glucose is broken down?