Question

where does the plant get each of the raw materials required for photosynthesis

Answer 1

Hey friend

Here is your answer

The needed materials reach plant cell chloroplasts as:

Energy: carried by photons from the energy source via electromagnetic radiation
.Hydrogen: carried from the pedosphere via roots and from the atmosphere via aerials (by capillary action from evaporation and osmotic pressure), in the form of water (H2O — the so liberated oxygen is released into the atmosphere).
Carbon & Oxygen: carried from the atmosphere via stomata, in the form of carbon dioxide (CO2).

All in all: Photon energy ++ 6 H2O ++ 6 CO2 →→ 6 O2 ++ C6H12O6

Answer 2

from environment/ atmosphere
air 
water 
sunlight