हरे पौधे और कुछ स्वपोषी जीवाणु एक पारिस्थितिकी तंत्र (ecosystem) में क्या प्राथमिक भूमिका निभाते हैं?

Ecological pyramids represent the relationship between organisms at different trophic levels. For which of the following is the pyramid generally inverted?

What is the term used for animals that convert plant biomass into animal biomass?

Identify the correct sequence of the terrestrial food chain.