Arrange the trophic levels in an order from lowest to highest in a terrestrial food chain:
(A) Wolf
(B) Grass
(C) Cow
(D) Lion
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (B), (C), (A), (D)
(B) Grass — first: the producer, the lowest trophic level. Green plants fix the energy of sunlight by photosynthesis, so every grazing food chain on land starts with them.
(C) Cow — second: the primary consumer. It is a herbivore that eats the grass directly.
(A) Wolf — third: the secondary consumer. It is a carnivore that feeds on herbivores such as the cow.
(D) Lion — fourth: the tertiary consumer, the top carnivore of this chain. It feeds on the carnivore below it and no animal in the chain feeds on it, so it sits at the highest trophic level.