Enlist the reactants required to carry out the process.

Complete the following crossword using the hints below. 
Across: 
1. Cellular respiration is a _____ reaction. 
5. Each stomatal pore is surrounded by a pair of cells called 

Down: 
2. Glucose and starch belongs to the same category of foods called 
3. During day time, the gas produced in the process of photosynthesis 
4. The extra glucose in the plants is changed into _____.
6. Photo means 
7. The gaseous exchange in plants takes place through _____.

Respiration : throughout day and night ::_____ : only during daytime.

List down the differences between photosynthesis and respiration.