Answer to Question 1
Any eight of the following:
produce satiety (fullness after eating)
transfer heat
add flavor
provide texture (body and mouthfeel)
tenderize
decrease temperature shock in frozen desserts
solubilize flavors and colors
disperse
aid in the incorporation of air (foaming)
Answer to Question 2
The precooking process ensures that the frozen vegetables will retain much of their natural appearance and flavor for long periods of time in storage
Without blanching, the product enzymes would prematurely turn brown or oxidize before it could be marketed.