Correct Answer: 2. A-III, B-IV, C-I, D-II
Solution:• Biological species concept - associated with Ernst Mayr (A-III), focusing on interbreeding and reproductive isolation.
• Evolutionary species concept - proposed by George Gaylord Simpson (B-IV), based on lineages through time.
• Ecological species concept - developed by Leigh Van Valen (C-I), emphasizing niche differentiation.
• Recognition species concept - linked to H.E.H. Paterson (D-II), focusing on mate recognition systems.