Question
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A): All vertebrates are chordates but all chordates are not vertebrates. Reason (R): Notochord is replaced by vertebral column in the adult vertebrates. In the light of the above statements, choose the most appropriate answer from the options given below:
(A) is False but (R) is True.
Both (A) and (R) are True and (R) correctly explains (A).
Both (A) and (R) are True and (R) does not correctly explain (A).
(A) is True but (R) is False.
members of the subphylum Vertebrata possess a notochord during the embryonic period. This notochord is replaced by a cartilaginous or bony vertebral column in the adult. The text explicitly states, 'Thus all vertebrates are chordates but all chordates are not vertebrates.' This confirms that both statements are true and the replacement of the notochord by the vertebral column (which defines vertebrates) explains why they are a subset of chordates (who possess a notochord at some stage) but distinct from protochordates.
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Animal Kingdom. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
More Animal Kingdom Questions
Match the following Mitochondrial Respiratory Complexes (List-I) with their components/names (List-II): List-I (a) Complex I (b) Complex II (c) Complex III (d) Complex IV List-II (i) Cytochrome c oxidase (ii) NADH dehydrogenase (iii) Succinate dehydrogenase (iv) Cytochrome bc1 complex
Match List-I with List-II: List-I (a) Chlamydomonas (b) Cycas (c) Selaginella (d) Sphagnum List-II (i) Moss (ii) Pteridophyte (iii) Algae (iv) Gymnosperm Choose the correct answer from the options given below:
Match the following columns and select the correct option: Column-I: (a) Chlamydomonas, (b) Cycas, (c) Selaginella, (d) Sphagnum Column-II: (i) Moss, (ii) Pteridophyte, (iii) Algae, (iv) Gymnosperm
Which one of the following organisms bears hollow and pneumatic long bones?
A jawless fish, which lays eggs in freshwater and whose ammocoetes larvae after metamorphosis return to the ocean is?
The unique mammalian characteristics are:
Match List-I with List-II List-I (A) Contractile vacuole (B) Water vascular system (C) Canal system (D) Flame cells List-II (I) Asterias (II) Amoeba (III) Spongilla (IV) Taenia Choose the correct answer from the options given below:
Match List-I with List-II: List-I A. Pleurobrachia B. Radula C. Stomochord D. Air bladder List-II I. Mollusca II. Ctenophora III. Osteichthyes IV. Hemichordata
Why 32,000+ students choose TopperSquare
15,000+ Chapter MCQs
Physics, Chemistry, Biology — chapter-wise, topic-wise practice
AI Performance Analytics
Know your weak topics. Get a personalised study plan.
Full NEET Mock Tests
180 questions, timed, with detailed score analysis
PYQ Sets 2010–2024
15 years of past papers with solved explanations
No credit card · 30-second signup · Free forever plan included
This neet biology practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. browse all neet practice questions → · practice biology sets →
Sign in to save your score, view detailed analytics, and bookmark tough questions for revision.
Sign In / Join FreeChapter-wise practice sets
Identify weak areas instantly
Step-by-step logic for every question