Answer:
Red and blue
Explanation:
Chlorophyll along with accessory pigment is responsible for absorbing those light from the spectrum which are sufficient enough to excite an electron from the chlorophyll and make the jump to higher energy level. Red and blue light are absorbed as they have the wavelength matching with the energy requirement of plants and trees. Green light is reflected by plants and trees due to which they appear green and hence green light is of no use to plant
