Biology – Verified PYQ Authority Guide
Biology is a sub-topic revision hub built around verified PYQ evidence. It connects the recurring question patterns inside this sub-topic with the formulas, exam tips, common traps and concept pages already present in SRO. Every factual learning cue below is drawn from the existing verified, published and approved English PYQ corpus or from its Knowledge Graph relationships; the hub does not invent unsupported technical claims.
PYQ evidence snapshot
25 verified PYQs are currently mapped to this Sub Topic hub. The represented years include 2025. Exam coverage currently includes RRB NTPC Under Graduate Level. Subject context includes General Awareness. These values come from live mappings and can expand automatically when new verified PYQs are added.
Most useful verified PYQs to solve first
Start with the actual questions rather than memorising a generic note. The links below are ranked from the mapped corpus using repeat history and editorial quality, while the complete explanation stays on the individual question page.
- DNA and RNA are polymers made of long chains of ______.
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is Nucleotides. This PYQ tests Biology and Human Science and should be revised as a fact association. - Tallness in pea plants as identified by Mendel, represents which type of trait?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is Dominant traits. This PYQ tests Biology and Human Science and should be revised as a fact association. - Which molecule is primarily responsible for storing genetic information in most living organisms?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is DNA. This PYQ tests Biology and Human Science and should be revised as a fact association. - The General Agreement on Tariffs and Trade (GATT) was signed in which of the following years?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is 1947. This PYQ tests Biology and Human Science and should be revised as a fact association. - The phenotype short in pea plants is expressed by which allele combination?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is tt. This PYQ tests Biology and Human Science and should be revised as a fact association. - How do antacids reduce pain during indigestion?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is Neutralising excess stomach acid. This PYQ tests Biology and Human Science and should be revised as a fact association. - Who was the great general responsible for executing Alauddin Khilji’s Deccan campaigns successfully?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is Malik Kafur. This PYQ tests Biology and Human Science and should be revised as a fact association. - The deficiency of which vitamin can lead to night blindness?
RRB NTPC Under Graduate Level · 2025 · Biology and Human Science
The correct answer is Vitamin A. This PYQ tests Biology and Human Science and should be revised as a fact association.
Formula & key-relationship bank from verified solutions
sin²θ + cos²θ = 1; tanθ = sinθ/cosθ; cotθ = 1/tanθ
Use these as revision triggers and open the linked PYQ before applying a formula numerically; variable definitions and assumptions belong to the exact solved question.
Core ideas repeatedly reinforced by the solved corpus
- The correct answer is Nucleotides. This PYQ tests Biology and Human Science and should be revised as a fact association.
- The correct answer is Dominant traits. This PYQ tests Biology and Human Science and should be revised as a fact association.
- The correct answer is DNA. This PYQ tests Biology and Human Science and should be revised as a fact association.
- The correct answer is 1947. This PYQ tests Biology and Human Science and should be revised as a fact association.
- The correct answer is tt. This PYQ tests Biology and Human Science and should be revised as a fact association.
Exam tips already validated in SRO solutions
- Revise Biology and Human Science with closely related General Science facts to eliminate similar distractors.
Common mistakes to avoid
- Selecting a familiar term without checking the exact qualifier, year, institution, article, place or definition.
Topic and concept coverage
Mapped topic labels include General Science. The concept trail includes Biology and Human Science. Use these labels as a revision map: move from the broad area to the narrow concept, solve a verified PYQ, inspect the detailed reasoning, and then attempt another question from the same cluster.
Knowledge Graph navigation
Continue with General Science, Biology and Human Science, General Awareness, General Awareness. These are canonical SRO entity links based on the Knowledge Graph and shared question mappings, not keyword-stuffed tag pages.
How to revise this authority page efficiently
- Solve before reading: answer a mapped PYQ first.
- Read the exact explanation: verify the correct principle, formula, distractor logic and common mistake on that question page.
- Move one level in the graph: use the closest concept/sub-topic/topic link rather than opening unrelated content.
- Reattempt: solve another verified PYQ from this hub and check whether the same error repeats.
Quality scope: this page is automatically maintained from SRO’s verified mapped corpus. It enriches one canonical authority URL instead of generating multiple near-duplicate pages for keyword variants. Manual authority articles are never overwritten by the automated engine.