Which of the following statement (s) about taxonomic aids is/are true
I. Keys are used to identify plants and animals based on similarities and disimilarities.
II. Flora contains the account of habitat and distribution of plants in a given area.
III. Flora provides an index to the plant species found in a particular area.
IV. Monographs provide information for identification of species found in an area
A. I and II only
B. I, II and III only
C. I and IV only
D. I only
