- A Storing dried plant specimens mounted on herbarium sheets
- B Identification of organisms based on contrasting characters
- C Cultivating living plant specimens under controlled greenhouse conditions
- D Preserving animal specimens in formalin solution within museums
Correct answer: B. Identification of organisms based on contrasting characters
Explanation: A key helps identify organisms by presenting paired contrasting characters (couplets) that the user chooses between step by step.
Concept context
Biodiversity, taxonomy, binomial nomenclature, the taxonomic hierarchy, and taxonomic aids like herbaria and botanical gardens. The foundational first chapter of NCERT Biology.