Identify the likely organisms I, II, III and IV in the food web shown below.

Options

A. `{:(I,II,III,IV),("Deer","Rabbit","Frog","Rat"):}`
B. `{:(I,II,III,IV),("Dog","Squirrel","Bat","Deer"):}`
C. `{:(I,II,III,IV),("Rat","Dog","Tortoise","Crow"):}`
D. `{:(I,II,III,IV),("Squirrel","Cat","Rat","Pigeon"):}`

Answer

A

Explanation

Producers utilise the radiant energy of sum which is transformed to chemical form during photosynthesis. Thus, green plants occupy the first trophic level. The herbivores constitute the secondary trophic level and the carnivores the third trophic level. Deer is herbivores, rabbit and rat are also herbivores, but frog eats the grasshoppers.