Question

The ecological pyramid of numbers in pond ecosystem is

• A. Upright
• B. Inverted
• C. May upright or inverted
• D. First upright then inverted

Answer 1

The correct option is A Upright

In a pond ecosystem, the pyramid of numbers is upright. Here, the producers, which are mainly the phytoplankton as algae, bacteria etc. are more in number than the herbivores, which are smaller fish rotifers etc. The secondary consumers (carnivores), such as small fish eating each other, water beetles etc. are less in number than the herbivores. Finally, the top (tertiary) consumers, the bigger fish are minimum in number. So, the correct answer is option A.