A forest ecosystem experiences a prolonged drought. Which trophic level would likely experience the most immediate and severe impact on its biomass?

Correct option is D

The correct answer is (d) Producers.
• Producers (green plants) are most affected during droughts as they rely directly on water and sunlight for photosynthesis.
• Reduced water availability limits their growth, reducing biomass at all higher trophic levels.
Information Booster:
• Producers form the first trophic level in an ecosystem.
• Drought disrupts nutrient cycling and energy flow.
• Primary consumers (herbivores) depend on producers for food, so they are affected later.
• Biomass pyramids always start with producers having the maximum energy.
• Ecological imbalance can lead to loss of biodiversity and food scarcity.
Additional Knowledge:
• Trophic levels: Producers → Primary consumers → Secondary consumers → Tertiary consumers.
• Examples of producers: green plants, algae, phytoplankton.
• Energy transfer efficiency between levels is about 10% (Lindeman’s Law).
• Prolonged droughts can cause desertification and ecosystem collapse if sustained.