A list of orders and characters are given below: A. Perciformes (Sub-order-Mastacembeloidei) have two gill openings & pectoral fins are present. B. Siluriformes have either a naked or covered body with bony plates, jaws generally with teeth, pectoral fin with its outermost ray modified into an osseous spine or thick ray. C. Cypriniformes have scales but devoid of plates on body & no teeth on jaws but pectoral fin is devoid of an osseous spine. D. Cluphiformes have a lateral line but body is compressed & often keeled scutes on abdomen & also with 1-5 branchiostegal rays. Which of these do not follow taxonomic characters?

Asked in Asst. Fisheries Development Officer 2024 · Topic: Taxonomy (Taxonomic Characters and Evidence (Morphological, Anatomical, Cytological, Molecular))

1. A & B
2. A, B, C & D
3. B only
4. D only

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