Question

Directly or indirectly, all the animals, including humans, depend on ___ for food.

• A. plants
• B. algae
• C. fungi
• D. themselves

Answer 1

Answer: (A)

Producers:

1. ​Plants are called the producers of the ecosystem as they can only produce their own food through photosynthesis.
   
2. Therefore, all the organisms in the ecosystem get their energy from the plants either directly or indirectly.
   
3. This means the herbivores directly get the energy from the plants and the carnivores get the energy from herbivores which gets its energy from plants.
4. Humans and animals are directly or indirectly dependent on plants for food.
   

Final Answer: Directly or indirectly, all the animals, including humans, depend on plants for food.