Q68: What is the main role of macroinvertebrates in assessing water... - Fisheries Resources - Fish Processing Technology- ICAR JRF/SRF 2024 | Agrigyan
Benthic macroinvertebrates (insects like mayflies, stoneflies, caddisflies; mollusks; crustaceans) inhabit the stream bottom sediment and possess varying tolerance thresholds to water pollution, nutrient enrichment, and dissolved oxygen depletion.
Because of their sedentary habits and lifespan of months to years, their community structure, richness, and biotic indices (e.g., EPT Index, BMWP Score) act as sensitive bioindicators (biomonitors) of long-term aquatic environmental health.
Correct Option: Option 4 (Bioindication).
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