A) X - Order; Y - Similar; Z - Similar
B) X - Genus; Y - Similar; Z - Different
C) X - Species; Y - Different; Z - Similar
D) X - Class; Y - Different; Z - Different
Correct Answer: A
Solution :Order being a higher category is the assemblage of families which exhibit a few similar characters. The similar characters are less in number as compared to different genera included in a family.
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