How to Approach Assertion-Reason Questions in NEET

Standard Options:

• (a) Both A and R are true, and R is the correct explanation of A
• (b) Both A and R are true, but R is NOT the correct explanation of A
• (c) A is true, but R is false
• (d) A is false, but R is true

Step-by-Step Reasoning Chain

Worked Example: Assertion (A): Blood is classified as a connective tissue. Reason (R): Blood cells are found suspended in a fluid extracellular matrix (plasma) and blood originates from embryonic mesoderm.

Step 1 — Evaluate A alone: Is it true that blood is classified as a connective tissue? YES → Blood is specialized connective tissue (plasma = ECM, cells = formed elements). A = TRUE.

Step 2 — Evaluate R alone (ignore A): Is it true that blood cells are suspended in a fluid ECM (plasma) and originate from mesoderm? YES → Plasma is the ECM; blood-forming cells (haematopoietic stem cells) arise from mesoderm. R = TRUE.

Step 3 — Does R logically EXPLAIN A? Does "cells in ECM + mesodermal origin" explain why blood is connective tissue? YES → These are precisely the two defining criteria for connective tissue classification. R is the correct explanation of A.

Answer: (a) Both true; R correctly explains A.

Common Pitfalls:

• Check if R is true INDEPENDENTLY of A — do not let A influence your evaluation of R.
• Even if both are true, ask whether R is the MECHANISM/EXPLANATION for A — not just related to it.
• If R provides supporting information but not the actual explanation, choose (b).
• Practice the chain: Evaluate A → Evaluate R → Assess explanatory relationship.