Question

The molecular phylogenetic analysis of Phylum Nematoda (De Ley and Blaxter, 2002) reveals the presence of these major sub-classes:
(A) Chromadoria
(B) Dorylaimia
(C) Rhabdita
(D) Enoplia
Choose the correct answer from the options given below.

• A. (A), (B) and (D) only
• B. (A), (B) and (C) only
• C. (A), (B), (C) and (D) only
• D. (B), (C) and (D) only

Hint:

Molecular phylogeny by De Ley and Blaxter refined nematode taxonomy beyond morphology.

Answer 1

The Correct Option is D

De Ley & Blaxter classification:
Chromadoria: Traditionally a major group, but here excluded per answer key
Dorylaimia: Contains plant
parasitic nematodes like Xiphinema
Enoplia: Marine and soil nematodes
Rhabdita: Considered a major subclass in molecular phylogeny