Question

Identify X, Y and Z with respect to freshwater ecosystem.
$\begin{array}{c}\text{X}\\ \text{Annelids}\\ \text{Snails}\end{array}\begin{array}{c}\text{Y}\\ \text{Small fishes}\\ \text{Frogs}\end{array}\begin{array}{c}\text{Z}\\ \text{Large fishes}\\ \text{Crocodiles}\end{array}$

• A. X - Primary consumer
  Y - Producers
  Z - Decomposers
• B. X - Primary consumer
  Y - Secondary consumer
  Z - Tertiary consumer
• C. X - Secondary consumer
  Y - Primary consumer
  Z - Tertiary consumer
• D. X - Decomposers
  Y - Producers
  Z - Primary consumer

Answer 1

The correct option is B X - Primary consumer

Y - Secondary consumer
Z - Tertiary consumer
In freshwater ecosystems, phytoplanktons acts as producers. They are eaten up by primary consumers like annelids and snails. The primary consumers are eaten by secondary consumers like small fishes and frogs. These animals are further eaten by the tertiary consumers like large fishes and crocodiles, which are the tertiary consumers.