Question

Arrange the trophic levels in an ecosystem starting from producers:
A. Plant, phytoplankton, grass, tree
B. Carnivore -- birds, fishes, wolf
C. Herbivore -- zooplankton, grasshopper and cow
D. Top carnivore -- man, lion Choose the correct answer from the options given below:

• A. A-C-B-D
• B. A-B-C-D
• C. A-D-B-C
• D. D-A-B-C

Hint:

Energy flows from producers to herbivores and then to carnivores.

Answer 1

The Correct Option is A

Concept:
An ecosystem contains different trophic levels through which energy flows from producers to consumers.

Step 1:
Plants and phytoplankton prepare food through photosynthesis and form the producer level. \[ A \text{ comes first} \]

Step 2:
Herbivores such as zooplankton, grasshoppers, and cows feed on producers. \[ C \text{ comes after A} \]

Step 3:
Carnivores such as birds, fishes, and wolves feed on herbivores. \[ B \text{ comes after C} \]

Step 4:
Top carnivores such as lions and humans occupy the highest trophic level. \[ D \text{ comes last} \]

Step 5:
Thus, the correct trophic order is: \[ A \rightarrow C \rightarrow B \rightarrow D \] \[ \boxed{\text{(1) A-C-B-D}} \]