NEET2026BiologyChapterActual
Given below is a reference to a diagrammatic representation of the evolutionary history of vertebrates through geological periods. Match the labels A, B, C, and D in List I with their corresponding evolutionary groups in List II. List I List II A Label A 1 Therapsids B Label B 2 Sauropsids C Label C 3 Thecodonts D Label D 4 Pelycosaurs Choose the correct answer from the options given below:
Options
- AA-1, B-4, C-3, D-2
- BA-4, B-1, C-2, D-3
- CA-4, B-2, C-1, D-3
- DA-2, B-3, C-4, D-1
Correct answer
B. A-4, B-1, C-2, D-3
Step-by-step solution
Based on the evolutionary history of vertebrates: 1. Early reptiles diverged into two main lineages: Synapsids and Sauropsids. Therefore, the branch labeled C represents Sauropsids. 2. The Synapsid lineage evolved into Pelycosaurs, which later gave rise to Therapsids, the direct ancestors of Mammals. Thus, label A represents Pelycosaurs and label B represents Therapsids. 3. The Sauropsid lineage (C) gave rise to Turtles, Lizards, Snakes, Tuataras, and Thecodonts. 4. Thecodonts further evolved into Crocodiles, Dinos