Answer:
The Organisms at the base of the food chain are photosynthetic
Explanation:
Plants on land and phytoplankton (algae) in oceans are termed as producers.The organisms that eats the producer are primary consumers.The primary consumers are herbivores such as goat,cattle,butterfly etc.,The animals that eats primary consumers are called carnivores (meat eaters) such as lion,tiger, lizard they are called the secondary consumers,it leads upto top of the food chain.The snake comes under tertiary consumer.Frog is eaten by a snake and snake is further eaten by a hawk. The hawk is a quarternary consumer.Examples
1.Rice-Rat-Owl
2.Leaves-goat-lion
3.Insects-Frog-Snake-Hawk