What ecological sampling tool is commonly used to estimate the population density of small herbaceous weeds or snails in an open savanna grassland?
Answer and explanation
Correct answer: D. quadrat frame
- Step 1: A quadrat is a square frame (typically 1 m × 1 m) thrown or placed randomly in a habitat. Step 2. Organisms within the quadrat are counted to calculate population density per unit area. Answer: quadrat frame. Why not the others: Plankton net samples aquatic microorganisms; pitfall trap catches crawling ground insects; pooter sucks tiny insects from vegetation.
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