"Sun is the ultimate source of energy for all living organisms " justify the statement.

Sun is the ultimate source of energy:

• Sun is the ultimate source of energy for all organisms.

• The green plants cannot prepare their own food in the absence of sunlight. Hence sunlight is essential for them.

• The heterotrophs take their food from plants and if the plants themselves do not have the energy source, they will die which ultimately will affect the heterotrophs.

• Hence, autotrophs or heterotrophs, both require sunlight as the source of their energy(food).