Question

Photosynthesis can be described in two forms: in terms of matter and in terms of energy. Which of the following options best describes the transformations of matter and energy in photosynthesis?

• A. Matter: Carbon dioxide, water $\to$ Proteins, oxygen
  Energy: Light energy $\to$ Proteins (Chemical energy)
• B. Matter: Carbon dioxide, water $\to$ Glucose, oxygen
  Energy: Light energy $\to$ Glucose (Chemical energy)
  
• C. Matter: Carbon dioxide, water $\to$ Glucose, oxygen
  Energy: Glucose (Chemical energy) $\to$ Light energy
• D. Matter: Oxygen, water $\to$ Glucose, carbon dioxide
  Energy: Glucose (Chemical energy) $\to$ Light energy

Answer 1

The correct option is B

Matter: Carbon dioxide, water $\to$ Glucose, oxygen
Energy: Light energy $\to$ Glucose (Chemical energy)

Green plants are called producers or autotrophs as they make their own food by the process of photosynthesis. The conversion of the matter is the transformation of carbon dioxide and water in the presence of chlorophyll and sunlight into glucose (food) and oxygen. The light energy involved in this process is transformed into chemical energy stored in the form of glucose and starch.