The keys are based on contrasting characters generally in a pair called _______.
Aflora
Bcouplet
Cmanuals
DFauna
Answer:
B. couplet
Read Explanation:
The keys are based on contrasting characters generally in a pair called couplet.
Flora contains the actual account of habitat and distribution of plants of a given area. It provides the index to the plant species found in a particular area.
Manuals are useful in providing information for identification of names of species found in an area.