Levels of organisation
FoundationUse this when revising cell, tissue, organ and organ-system basics.
- Cell structure and tissue type questions often start from this ladder.
- Useful for physiology and anatomy-based elimination.
Pragyesh IAS · BPSC PYQ Intelligence
BPSC Biology PYQ Trend Analysis
Ultra-detailed topic weightage, repeat clusters, 65th-71st shift, 71st-specific fingerprint, and micro-revision strategy.
This page maps the uploaded 35-page Biology/Life Science compilation as a question bank, not as a textbook. The aim is to identify where BPSC repeatedly returns, what has become more conceptual in recent papers, and exactly what an aspirant should revise inside each topic.
274 numbered bank entries
22 micro-segments
Core + allied BPSC lens
71st BPSC fingerprint
Interactive PYQ drill
274
Numbered PYQ/MCQ entries
Mapped from section numbering in the compilation
22
Micro-segments
From biology branches to biotech and mixed applied science
103
Human physiology + nutrition
37.6% of all numbered entries
8
Unique 71st concept clusters
One 71st herpes item appears twice in the source bank
Methodology
What exactly is being counted?
The source is a compiled PYQ bank, so the page distinguishes printed question entries from identifiable exam-reference tags. This prevents false precision.
Important:
this is
PYQ-bank weightage
, not the official number of Biology questions in each BPSC paper. The compilation includes core BPSC Prelims as well as allied BPSC-family exams such as Teacher/TRE, CDPO, BAO, Assistant and Auditor. It also contains at least one duplicated 71st item (the herpes-host interaction question), so 71st is analysed using unique concepts as well as printed references.
35
PDF pages
Biology/Life Science bank analysed
274
Numbered entries
Derived from section-wise numbering
270
Exam tags identified
Text-extractable BPSC reference labels
186
Core BPSC tags
68.9% of identifiable tags
84
Allied-exam tags
31.1% Teacher/TRE/CDPO/BAO/etc.
Core vs allied source mix
270 identifiable tagsHow to use the numbers
Use bank density to identify recurring conceptual zones. For final BPSC CCE revision, give extra weight to themes that recur in core Prelims and also appear again in 65th-71st papers. Allied questions are useful because they reveal BPSC's broader question-writing vocabulary, especially in biology definitions, human physiology, and plant science.
Biology visual anchors
Quick revision diagramsBecause this is a Biology page, these compact diagrams give a fast visual memory hook for the exact kinds of zones the PYQ bank repeatedly touches—foundations, genetics/biotech, and plant physiology.
Central dogma
Genetics / BiotechA clean memory route for DNA, RNA, gene expression, mutation, and biotechnology questions.
- Helpful in gene, chromosome, virus and enzyme-linked reasoning.
- Also supports biotech and mixed applied-science sections.
Plant transport map
Plant biologyA one-look reminder for root uptake, xylem flow, photosynthesis zone and food transport.
- Useful for photosynthesis, transpiration and transport-system PYQs.
- Good anchor for plant tissue and plant physiology revision.
Macro Weightage
Human physiology dominates the bank
When the 22 micro-segments are grouped into six preparation blocks, one fact becomes obvious: Biology in this compilation is not evenly distributed.
274
mapped entries
Human physiology + nutrition
103 questions
37.6%
103 questions
Plant biology
60 questions
21.9%
60 questions
Foundations + diversity
33 questions
12.0%
33 questions
Disease + health
27 questions
9.9%
27 questions
Biotech + mixed applied
34 questions
12.4%
34 questions
Cell/genetics/bio-agri
17 questions
6.2%
17 questions
37.6%
Human Physiology & Nutrition
Skeleton, digestion, vitamins, respiration, circulation, excretion, nervous, endocrine and reproduction.
21.9%
Plant Biology
Photosynthesis, plant transport, hormones, morphology, reproduction and economic botany.
12.0%
Foundations & Diversity
Biology branches, evolution, classification, taxonomy and organism diversity.
12.4%
Biotech + Mixed Applied
MRI, vaccines, cloning, gene mapping, medical technology, applied biology and mixed science.
9.9%
Disease & Health
Viruses, bacteria, malaria, vectors, TB, vaccines, deficiency and non-infectious disorders.
6.2%
Cell, Genetics & Bio-agri
Cell structure, DNA/RNA, heredity, codons, organic farming and biofertilisers.
Micro Weightage
22 micro-segments: exact bank density
The most useful comparison is not “Botany vs Zoology.” It is the micro-density inside each block.
Top 10 meaningful micro-topics
Miscellaneous excludedWhy “frequency” alone is not enough
Recent-signal overlaySome low-count topics have become more valuable recently. Genetics has only seven entries in its dedicated section, yet the 68th, 69th and 71st papers move toward DNA/RNA, codons, membranes and molecular function. The same is true for plant transport and symbiosis.
| # | Micro-segment | Entries | Bank share | What repeats inside it | Revision signal |
|---|---|---|---|---|---|
| 1 | Diseases & health | 27 | 9.9% | malaria, TB, HIV/AIDS, bacterial disease, vectors, vaccines, cancer, deficiency | Very High |
| 2 | Vitamins & nutrition | 24 | 8.8% | source-deficiency-chemical name-function matching | Very High |
| 3 | Circulation, blood & immunity | 20 | 7.3% | blood groups, Rh, plasma, Hb, valves, BP, WBC/lymphocyte | Very High |
| 4 | Plant nutrition & morphology | 20 | 7.3% | xylem, osmosis, transpiration, plant hormones, modified stems, edible parts | Very High + Recent |
| 5 | Economic / applied botany | 19 | 6.9% | spices, medicinal plants, fibres, scientific names, antibiotics | High |
| 6 | Classification & diversity | 17 | 6.2% | plant groups, phyla, lichen, mycorrhiza, characteristic features | High + 71st |
| 7 | Skeletal & muscular | 16 | 5.8% | bones, cartilage, tendon/ligament, muscle proteins, joints | High |
| 8 | Photosynthesis & plant physiology | 15 | 5.5% | chloroplast, chlorophyll, light/dark reaction, ATP, auxin, osmosis | High + Recent |
| 9 | Digestive system | 12 | 4.4% | insulin metabolism, liver, enzymes, HCl, pancreas, taste | High |
| 10 | Endocrine system | 11 | 4.0% | insulin, TSH, thyroxine, pituitary, estrogen, oxytocin, endocrine glands | High + 71st |
| 11 | Biology branches | 9 | 3.3% | genetics, ornithology, pomology, osteology, plant physiology | Medium |
| 12 | Evolution | 7 | 2.6% | natural selection, mutation, human ancestry, Archaeopteryx | Medium |
| 13 | Cell biology | 7 | 2.6% | cell unit, mitochondria, membranes, cell wall, permanent tissue | Medium + Recent linkage |
| 14 | Genetics & molecular | 7 | 2.6% | Mendel, DNA, double helix, codons, DNA/RNA, heredity | High recent signal |
| 15 | Nervous system | 7 | 2.6% | EEG, hypothalamus, reflex, cerebellum/balance, CNS | Medium-High |
| 16 | Biotech / genetic engineering | 7 | 2.6% | MRI, vaccination, cloning, gene mapping, mRNA, Khorana | High recent signal |
| 17 | Plant reproduction | 6 | 2.2% | vegetative propagation, false fruits, ovary-fruit, pollination | Medium |
| 18 | Respiratory system | 5 | 1.8% | diaphragm, breathing, aerobic respiration, CO2 release | Medium |
| 19 | Excretory system | 4 | 1.5% | kidney blood flow, nephron, excretion, adrenal location | Medium |
| 20 | Human reproduction & embryology | 4 | 1.5% | ultrasound, fertilisation, embryo, genetic variation | Medium |
| 21 | Biofertiliser / organic agriculture | 3 | 1.1% | organic farming, mycorrhizal fungi, blue-green algae | Low count, useful linkage |
| 22 | Mixed applied biology | 27 | 9.9% | vaccines, temperature, biocontrol, medical science, ecology, plant facts | Mixed / revision pool |
Era Analysis
The bank becomes much more recent-heavy after the 65th
Only core references with printed ordinal numbers are placed into eras. Unnumbered labels such as “BPSC (Pre) 2016” are deliberately kept separate rather than guessed.
66
38th-59th labelled references
Older bank: direct definitions, organ facts, classic vitamins, diseases, evolution and simple plant physiology.
10
60th-64th labelled references
This looks small because multiple entries are printed only as “BPSC (Pre) 2016” without the ordinal. We do not force them into a guessed bucket.
89
65th-71st labelled references
The compilation is strongly enriched with recent BPSC: more five-option stems, functional physiology, cell/molecular detail and applied biology.
21
Core tags without ordinal
Core Prelims references whose year is printed but ordinal is not. Kept separate for methodological honesty.
65th-71st reference frequency
includes Re-Exam labels
65th
66th
67th
68th
69th
70th
71st
What changed in the recent era?
Older fingerprint
Direct, static, memory-heavy
- Which organ / vitamin / scientist?
- Human bone counts and basic physiology.
- Simple disease-agent questions.
- Classic evolution and plant facts.
65th-70th fingerprint
Five-option uncertainty + conceptual mixing
- “More than one / none” becomes frequent.
- Human physiology stays strong.
- Plant transport, hormones and organism traits recur.
- Vaccines, mRNA and applied health enter the bank.
71st fingerprint
Four choices again, but sharper concepts
- Stop codon and membrane composition.
- Mycorrhiza and xylem function.
- Taxonomy/systematics and fruit morphology.
- Endocrine definition + virus-host interaction.
71st BPSC Micro Snapshot
71st Biology is a strong plant + molecular signal
The source contains nine 71st reference appearances, but one herpes-host interaction item is duplicated. Using eight unique concepts gives a cleaner fingerprint.
71st
8 unique biology concepts
A.P. de Candolle
systematics
systematics
Mycorrhiza
benefits
benefits
Stop codon
UAA
UAA
Biological
membranes
membranes
Endocrine
glands
glands
Xylem
function
function
Mango
mesocarp
mesocarp
Herpes-host
parasitism
parasitism
1
Plant systematics: A.P. de Candolle
Plant
Use of vascular-tissue traits in plant classification.
2
Mycorrhiza: function, not just definition
Plant + symbiosis
Mineral absorption and protection from root-borne disease.
3
Molecular genetics: nonsense codon
Molecular
Recognition of UAA as a stop codon.
4
Cell biochemistry: membrane composition
Cell
Lipid-protein combinations / fluid-mosaic logic.
5
Endocrine definition
Human
Hormones as secretions of endocrine glands.
6
Xylem transport
Plant
Water + dissolved mineral transport from roots upward.
7
Fruit morphology
Plant
Edible fleshy part of mango = mesocarp.
8
Virus-host biological interaction
Virology
Herpes simplex virus and human host framed through parasitism.
50% Plant-facing
Four of eight unique 71st concepts are directly plant/systematics/transport/morphology linked: de Candolle, mycorrhiza, xylem and mesocarp.
25% Cell + molecular
Stop codon and biological membrane composition show a move beyond purely school-level organism facts.
25% Human/host biology
One endocrine definition plus one virus-host interaction. Recent Biology is broad, but asks exact functional language.
Interactive Micro Trend Explorer
Click a topic and see exactly what to revise
Each panel combines bank density, repeat pattern, recent signal, and a compact memory chain.
Micro Topic
Vitamins & nutrition
24
bank entries
Priority
A++
Recent signal
Stable + recurring
Question fingerprint
Source / chemical name / deficiency / function / pair-matching
A-retinol-night blindness
B1-thiamine-beri-beri
B3-niacin-pellagra
B12-cobalamin-cobalt
C-ascorbic-scurvy
D-rickets / sunlight
K-clotting
water vs fat soluble
Revision chain:
Vitamin → chemical name → source → function → deficiency → special synonym
Atomic Revision
The recurring fact-chains BPSC keeps recycling
Instead of rereading chapters, revise the exact relationship chains that generate multiple MCQs.
Vitamins: the highest-return chain
- A → Retinol → liver storage → carrot → night blindness/xerophthalmia
- B1 → Thiamine → beri-beri
- B3 → Niacin → pellagra
- B12 → Cobalamin → cobalt → anaemia / nervous function
- C → Ascorbic acid → scurvy → citrus; milk is a poor source
- D2/D3 → bone health / rickets; sunlight + cod-liver oil
- K → blood clotting → antihaemorrhagic role
Blood & circulation
- RBC / erythrocyte → Hb → O2 transport
- Plasma → liquid blood component → about 55%
- Rh factor → transfusion compatibility
- AB+ → universal recipient; O- → universal donor concept
- Heart valves → prevent backflow
- BP → sphygmomanometer → 120/80 mmHg
- Lymphocyte → immunity / antibodies
Endocrine system
- Pancreas → insulin → glucose metabolism → diabetes if deficient
- Pituitary → TSH → thyroid → thyroxine
- Thyroxine → iodine; deficiency chain → goitre
- Oxytocin → milk ejection / uterine contraction
- Estrogen → female secondary sexual characters
- Pineal → melatonin → biological clock / “third eye”
- Hypothalamus → temperature, hunger, thirst
Plant transport & physiology
- Root water entry → osmosis
- Xylem → water + minerals; phloem → food
- Transpiration pull → upward water movement
- Chlorophyll → red + blue absorption → green reflection
- Chloroplast → photosynthesis; stroma → dark reaction
- Auxin → shaded side → phototropism
- Cytokinin / gibberellin / auxin → plant hormones
Disease-vector-vaccine chain
- Malaria → Plasmodium → female Anopheles → liver/spleen
- TB → Mycobacterium tuberculosis → lungs → BCG
- AIDS → HIV
- Typhoid + cholera → water-borne
- Anthrax → Bacillus anthracis
- Trachoma → eye → Chlamydia trachomatis
- Ishihara → colour blindness test
Genetics + biotech chain
- Mendel → heredity → sexual reproduction
- Miescher → first DNA identification; Watson-Crick → double helix
- DNA → hereditary control; gene → unit of heredity
- UAA/UAG/UGA → stop codons
- Gene mapping → relative position on chromosome
- mRNA → messenger RNA → protein synthesis / vaccine linkage
- Biotechnology → cloning / cellular-molecular processes
Plant morphology & economic botany
- Ginger/turmeric → rhizome (modified stem)
- Mango edible part → mesocarp
- Litchi edible part → aril
- Clove → dried flower bud
- Quinine → Cinchona bark
- Aspirin origin → willow bark
- False fruit → apple example
Classification & organism traits
- Lichen → algae + fungus → mutualism
- Mycorrhiza → fungus + root → minerals + protection
- Fern → vascular cryptogam
- Arthropoda → largest animal phylum
- Echinodermata → marine + water vascular system
- Mycoplasma → smallest independently reproducing organism
- Fungi → chlorophyll absent
Human anatomy mini-facts
- Tendon → muscle to bone; ligament → bone to bone
- Cartilage → flexible connective tissue
- Actin + myosin → contractile proteins
- Spinal cord → reflex centre
- Cerebellum + inner ear → balance
- Nephron → kidney filtration unit
- EEG → brain activity
Preparation Priority
Frequency × recency × repeatability matrix
This is the practical layer: what should be mastered first if revision time is limited?
Priority A++ · Master first
High density and/or strong recent signal. These should be recall-ready, not merely familiar.
Priority A · Strong command
Large stable banks that frequently generate direct and functional MCQs.
Priority B · Compact revision
Lower bank count, but easy marks if prepared as small tables and chains.
Question-solving rule
For post-65th questions, do not memorize only “name → answer.” Build the function and contrast pair: xylem vs phloem, tendon vs ligament, B vs T lymphocyte, vitamin source vs deficiency, virus vs bacteria, endocrine vs exocrine.
Source-Style Sample PYQs
Questions that reveal the trend better than prose
These are representative questions from the uploaded compilation, selected to show the shift from static memory to exact functional concepts.
71st · Molecular genetics
Recent precision
Which of the following is a nonsense / stop codon?
- UAA
- AUG
- UUU
- UGC
71st · Plant symbiosis
Function-based
In mycorrhizal association, what benefit does the plant receive?
- Only food
- Only mechanical support
- Increased mineral absorption and disease protection
- No benefit
71st · Plant transport
Core function
Xylem is responsible primarily for the transport of:
- Water and dissolved minerals
- Food
- Oxygen
- Amino acids only
69th · Biotechnology
Current-static linkage
What is the expanded form of mRNA, widely discussed during the pandemic era?
- Mnemonic RNA
- Messenger RNA
- Mutant RNA
- Modified RNA
68th · Plant biochemistry
Conceptual static
Chlorophyll absorbs most strongly in which visible-light regions?
- Red and blue
- Green and blue
- Green and red
- None
67th · Blood physiology
Applied matching
In blood transfusion, apart from blood group, what compatibility factor is important?
- Rh factor
- WBC count
- RBC size
- Family lineage
Interactive PYQ Drill
10-question high-yield Biology test
The drill intentionally mixes 71st-style plant/molecular questions with the largest repeated clusters.
BPSC Biology PYQ Practice
Question 1 of 10 • Select the correct answer
Question 1
Which of the following is a nonsense / stop codon?
Select the correct answer:
Score:
0/10
Execution Plan
30-day micro-revision plan
The schedule is weighted by bank density rather than chapter order.
Day 1-3
Vitamins & nutrition
Build source-name-deficiency-function tables.
Day 4-6
Blood + circulation
RBC/WBC/plasma, groups, Rh, BP, heart.
Day 7-9
Disease + vectors
Agent-vector-organ-vaccine-treatment chains.
Day 10-11
Endocrine
Gland → hormone → function → deficiency/excess.
Day 12-13
Digestive + respiration
Enzymes, liver, pancreas, HCl, breathing mechanics.
Day 14-15
Skeletal + nervous
Bone/joint/tissue pairs + brain/reflex/balance.
Day 16-18
Photosynthesis
Chloroplast, chlorophyll, ATP, dark reaction, auxin.
Day 19-21
Plant transport & morphology
Xylem/phloem, osmosis, transpiration, hormones, edible parts.
Day 22-23
Economic botany
Spices, medicinal plants, fibres, scientific names.
Day 24-25
Classification & diversity
Plant groups, phyla, lichen, mycorrhiza, organism traits.
Day 26-27
Cell + genetics
DNA/RNA, codons, membranes, organelles, heredity.
Day 28
Biotechnology
MRI, vaccines, gene mapping, cloning, mRNA.
Day 29
Evolution + reproduction
Compact revision of lower-density predictable facts.
Day 30
71st + error notebook
Re-solve recent concepts and all wrong PYQs.
Daily rule
15-minute chain recall
Write 10 “A → B → C” Biology relationships from memory.
Core takeaway
The compilation shows a clear hierarchy: Human physiology + nutrition is the largest bank, but the most important recent shift is toward plant function, molecular/cell biology, exact physiology, and applied disease/vaccine concepts . The 71st paper is especially revealing: half of its unique Biology concepts in this compilation are plant-facing, while stop codons and membrane composition push molecular precision upward. Therefore, prepare Biology as relationship chains and function contrasts, not as isolated one-line facts.