Question

The autotrophic components of the pond ecosystem include

• A. Floating, submerged and marginal plants found at
  the edges
• B. Phytoplanktons
• C. All of the above
• D. Some algae

Answer 1

The correct option is C All of the above

Introduction to autotrophs
Autotrophs are organisms that can prepare their food by utilising the sun’s energy or chemical energy obtained from the oxidation of organic or inorganic molecules. They belong to the trophic level of producers.

Autotrophic components of the pond ecosystem

1. Phytoplanktons (microscopic plants) such as Oscillatoria, Volvox, etc.
2. Some algae
3. Floating plants growing along the bank or in shallow water such as Eichhornia.
4. Submerged plants such as Vallisneria.
5. Marginal and emergent plants such as Ipomea, Phragmites, etc.

Final answer
(D) All of the above