BZYET 143 Solved Guess Paper 2026 is a 23-question, exam-focused answer set for IGNOU course BZYET-143 Insect Vectors and Vector Borne Diseases, prepared for the June and December 2026 term-end exams. It is built for B.Sc. (General) Zoology learners who want to walk into a 2 hour, 50 mark paper knowing which answers to write and how long each one should be.
BZYET-143 is the Discipline Specific Elective in Zoology that studies insects which carry disease to humans, the pathogens they carry and the ways to control them. The textbook runs across two volumes, and most learners find it hard to decide what to learn first. This page shows you five full answers so you can judge the quality before you order.
BZYET-143 key facts
- Course: BZYET-143 Insect Vectors and Vector Borne Diseases
- Programme: B.Sc. (General) with Zoology, BSCG (Discipline Specific Elective)
- Syllabus: 2 volumes, 4 blocks, 15 units
- Term-end exam: 2 hours, 50 marks; Q1 compulsory plus any 4 of Q2 to Q7
- Guess paper size: 23 solved questions in a 24-page PDF
- Papers tabulated: 6 papers, December 2023 to June 2026
- On this page: 5 full sample answers
- In the full PDF: All 23 answers (18 more beyond the samples)
- Companion lab: BZYEL-144 (2 credits), a separate course
- Medium: English
What the BZYET 143 Solved Guess Paper Covers in Insect Vectors and Vector Borne Diseases
The guess paper answers 23 questions: 10 full 10 mark questions, 9 two-part 5+5 questions, 2 short note sets, 1 differentiate pairs set and 1 compulsory Q1 practice set.
Every question is mapped to its block and tagged HIGH or MEDIUM, based on how often the topic returned in recent papers. You will not find padding here. Topics like Zika and chikungunya, which did not appear in six recent papers, are kept to a mention so your time goes to lice, sand flies and IVM.
The answers are written in simple English with short numbered points, because that is how BZYET-143 examiners read a 10 mark answer. If you are preparing more than one course this term, the full range of IGNOU Solved Guess Paper sets follows the same definition, points and conclusion format.
Think of this BZYET 143 Guess Paper as the shortest route through the textbook. It does not replace your reading, but it tells you which unit to open, which diagram to practise and which scientific names you cannot afford to misspell.
5 Solved BZYET 143 Sample Questions from Insect Vectors and Vector Borne Diseases
Below are 5 of the 23 answers exactly as they appear in the PDF, one from each of the four blocks plus one extra from Block 4. Read one fully and check whether it is clear enough to reproduce in the exam.
Sample 1: Modes of Transmission and Vectorial Capacity
Question: (i) Write a note on the modes of transmission of diseases by biological vectors. (5) (ii) What is vectorial capacity? Discuss the factors affecting it. (5)
(i) Modes of Transmission of Disease
A disease vector (vector is a Latin word which means 'bearer') is any agent (a human, animal or microorganism) that carries and transmits an infectious pathogen into another living organism.
- Propagative transmission: The pathogen only multiplies in the vector. There is no change of stage. Example: dengue and JE viruses; plague bacilli in rat flea.
- Cyclopropagative transmission: The pathogen changes its stages and also multiplies. Example: malaria, where one zygote gives more than 2,00,000 sporozoites.
- Cyclodevelopmental transmission: The pathogen changes stages but does not multiply. Example: filaria, where one microfilaria gives only one infective larva.
- Vertical transmission: The pathogen passes from the female vector to offspring through eggs (transovarial transmission), then from stage to stage (trans-stadial).
(ii) Vectorial Capacity
Vectorial capacity is a measurement of the efficiency of vector-borne disease transmission.
Formula: VC = m a2 C Pn / (−loge P). Here m is vector density per host, a is feeding rate, C is vector competence, P is daily survival and n is the extrinsic incubation period.
- Anthropophilic biting: Vectors that prefer human blood are more efficient.
- Longevity: The vector must live longer than the incubation period of the pathogen.
- High productivity and density: More vectors mean more infection.
- Bio-rhythm with host: Painless or night biting helps feeding without disturbance.
- Transovarial transmission: Adults are infected from birth, as in Aedes.
- Environmental and intrinsic factors: Temperature and immune status affect pathogen growth.
Conclusion: Biological vectors transmit in four ways. Vectorial capacity shows how efficiently a vector spreads disease.
Sample 2: Medical Importance of Three Human Lice
Question: Explain the medical importance of three types of lice that are ectoparasitic on humans.
The body louse (Pediculus humanus corporis), head louse (Pediculus humanus capitis) and pubic or crab louse (Pthirus pubis) are the three types of sucking lice found in humans.
1. Body Louse
- Pediculosis and vagabond disease: Itching, allergy, and dark, tough skin from long scratching.
- Epidemic typhus: Caused by Rickettsia prowazekii. Man gets it when louse faeces are scratched into bite wounds, not by the bite. Treated with doxycycline.
- Louse-borne relapsing fever: Caused by Borrelia recurrentis. Spreads when infected lice are crushed. Treated with tetracycline.
- Trench fever: Caused by Bartonella quintana. Also called five-day fever. First seen in soldiers in World War I.
2. Head Louse
- Low disease role: Not important as a pathogen carrier. Only in the lab can it carry R. prowazekii.
- Irritation: Heavy infestation causes severe irritation and secondary infection.
- Plica polonica: Scabby crusts form on the head with lice below them.
- High risk group: School children. Girls are infested 2 to 4 times more than boys.
3. Pubic (Crab) Louse
- No disease: No proof that it spreads any disease in nature.
- Pruritus: Bites cause itching and allergic reaction.
- Blue spots: Maculae caeruleae (0.2 to 0.3 cm) appear some hours after biting.
Conclusion: Only the body louse is a real disease vector. Head and pubic lice mainly cause irritation and skin problems.
Sample 3: Life Cycle of Malaria Parasite
Question: Describe the life cycle of malaria parasite with the help of a well-labelled diagram.
Malaria is an Anopheles-borne disease caused by the Plasmodium parasite (a protist).
Malaria is caused by P. vivax, P. falciparum, P. malariae and P. ovale. P. vivax and P. falciparum are common in India. The parasite needs two hosts: human and female Anopheles.
A. In Human Host
- Entry: Infected female Anopheles bites and injects sporozoites with her saliva.
- Liver stage: A sporozoite enters a liver cell and becomes a schizont. It makes 30,000 to 40,000 merozoites within six days.
- RBC stage: Merozoites enter red blood cells. Each becomes a trophozoite and feeds on haemoglobin.
- Bursting of RBC: The schizont releases 8 to 24 new merozoites. Toxic pigment (haemozoin) causes chills and fever.
- Gametocytes: Some merozoites form male and female gametocytes.
B. In Female Anopheles
- Fertilisation: Gametocytes are sucked with blood. Gametes fuse in the midgut to form a zygote.
- Ookinete and oocyst: The zygote becomes a motile ookinete. It crosses the gut wall and forms an oocyst.
- Sporozoites: The oocyst divides and releases sporozoites. They reach the salivary glands.
The cycle in the liver is exoerythrocytic, in RBCs it is erythrocytic, and in the mosquito it is sporogonic (about two weeks). Plasmodium cannot complete its cycle below 20 °C. The labelled diagram for this answer is included in the full PDF.
Conclusion: Plasmodium multiplies asexually in the human liver and RBCs and sexually in Anopheles, so the mosquito is needed to spread malaria.
Sample 4: Kala-azar: Sand Flies, Transmission and Control
Question: Name any three species of sand fly and write a brief account of the diseases spread by them. Explain the transmission of kala-azar by sand flies and write their control measures.
Visceral leishmaniasis is a chronic disease caused by Leishmania donovani.
Sand flies belong to family Psychodidae, subfamily Phlebotominae. In the Indian subcontinent two genera, Phlebotomus and Sergentomyia, have 46 species. Phlebotomus argentipes is the only known vector of kala-azar in India.
| Sand fly species | Disease | Pathogen |
|---|---|---|
| Phlebotomus argentipes | Visceral leishmaniasis (kala-azar) | Leishmania donovani |
| P. sergenti, P. papatasi | Anthroponotic cutaneous leishmaniasis (oriental sore) | Leishmania tropica |
| P. salehi | Zoonotic cutaneous leishmaniasis | Leishmania major |
| Phlebotomus species | Sand fly fever | Phlebovirus |
Transmission of Kala-azar
- Bite of sand fly: Female P. argentipes injects promastigotes while taking a blood meal.
- Other routes: Sexual contact, blood transfusion, congenital infection and accidental inoculation.
- Symptoms: Fever, enlarged spleen and liver, anaemia, low WBC and platelet count.
- PKDL: After recovery, whitish skin spots may form (Post Kala-azar Dermal Leishmaniasis).
Prevention and Control
- Indoor residual spraying (IRS): Spray houses and animal shelters with pyrethroids or organochlorines. Works best with case detection.
- Personal protection: Protective clothing, repellents and insecticide-treated bed nets.
- Habitat reduction: Plaster cracks in walls. Remove organic waste and unused buildings.
- Reservoir control: Control dogs and rodents. Deltamethrin dog collars prevent bites.
- Sanitation: Dispose of garbage away from houses.
Conclusion: P. argentipes spreads kala-azar in India. IRS, bed nets and clean surroundings are the main control measures.
Sample 5: IVM Key Elements and Insecticide Resistance
Question: (i) Explain the concept, objectives and key elements of Integrated Vector Management. (5) (ii) What are the ways by which development of insecticide resistance in vectors can be avoided? (5)
(i) Integrated Vector Management (IVM)
Integrated vector management (IVM) is, in fact, a rational decision-making process to optimise the use of resources for vector control.
Objectives: IVM improves the efficacy, cost effectiveness, ecological soundness and sustainability of vector control. It uses the tools and resources already available.
- Advocacy, social mobilisation and legislation: Add IVM to policies, make public health laws and empower communities.
- Collaboration: The health sector works with other public and private sectors.
- Integrated approach: Tackle many diseases together. Mix chemical and non-chemical methods.
- Evidence-based decision-making: Plan as per local ecology, research and monitoring.
- Capacity-building: Provide infrastructure, money and trained people.
(ii) Ways to Avoid Insecticide Resistance
The indiscriminate use of chemicals has made disease vectors resistant to them.
The main causes are detoxification mechanisms and target insensitivity.
- No overuse: Avoid indiscriminate use of insecticides.
- Different modes of action: Avoid insecticides with a similar mode of action.
- Single mechanism: Avoid insecticides that cause more than one resistance mechanism.
- Stage-specific use: Do not use the same insecticide on adults and larvae.
- Non-chemical methods: Use biopesticides, larvivorous fish and net screens.
- Synergists: Mix synergists so insecticides work at lower doses.
- Rotation: Rotate insecticide groups with different modes of action.
Conclusion: IVM is a smart, decision-based use of all control methods. Careful and rotated insecticide use prevents resistance.
Liked these five? The full PDF has 18 more answers in the same style, including Q1 practice and all ten differentiate pairs.
Get the Full BZYET-143 Guess Paper on WhatsApp 9899436384BZYET 143 Exam Pattern and Marks Distribution
The BZYET-143 term-end exam is 2 hours long and carries 50 marks. Question 1 is compulsory, and you attempt any four of Questions 2 to 7.
This pattern is taken from the official IGNOU June 2023 BZYET-143 question paper and matches every later paper tabulated in the guess paper. No word limit is printed, so the answers use about 250 words for 10 marks and 150 words for each 5 mark part.
| Part | What is asked | Marks | Suggested length |
|---|---|---|---|
| Q1 (compulsory) | Five one-line answers and five match the columns items | 5×1 + 5×1 = 10 | One line each |
| Full question | Life cycle with diagram, or diseases, transmission and control of one vector | 10 | About 250 words plus diagram |
| Two-part question | Two linked topics, such as IVM elements and resistance | 5+5 | About 150 words per part |
| Short notes | Four topics like mouthparts, antennae, wings and legs | 4×2.5 = 10 | About 60 to 80 words per note |
| Differentiate pairs | Four pairs, such as Apterygota and Pterygota | 4×2.5 = 10 | A two or three row table per pair |
| Total | Q1 plus any four of Q2 to Q7 | 50 | 2 hours |
BZYET 143 Insect Vectors and Vector Borne Diseases Blocks and Units
BZYET 143 Insect Vectors and Vector Borne Diseases has 15 units in 4 blocks, spread over two volumes. Volume 1 holds Blocks 1 and 2, and Volume 2 holds Blocks 3 and 4, as listed on eGyanKosh, IGNOU's official study material repository.
The table shows the exam-heavy topics inside each unit and which guess paper questions answer them. If you still need the textbook itself, keep your BZYET 143 Study Material open beside the guess paper while you revise.
| Block | Unit | Unit title | Key exam topics | Guess paper Qs |
|---|---|---|---|---|
| Block 1: Introduction to Insects | Unit 1 | Characteristics of Class Insecta | Three body regions, hexapod plan, why insects are the only winged invertebrates | Q23 |
| Block 1: Introduction to Insects | Unit 2 | Insect Morphology | Six mouthpart types, leg and wing modifications, ommatidium structure | Q3, Q4, Q5 |
| Block 1: Introduction to Insects | Unit 3 | Insect Life Processes | Functions of haemolymph, dorsal vessel and ostia, Malpighian tubules | Q4 |
| Block 1: Introduction to Insects | Unit 4 | Insect Classification | Apterygota vs Pterygota, 29 orders under Imms, ametabolous to holometabolous | Q1, Q2 |
| Block 1: Introduction to Insects | Unit 5 | Concept of Insect Vectors | Vector vs carrier, cyclopropagative transmission, vectorial capacity formula | Q6 |
| Block 2: Medically Important Insect Vectors-I | Unit 6 | Medically Important Insect Orders | Diptera halteres, Siphunculata clinging legs, Siphonaptera and Hemiptera traits | Q3 |
| Block 2: Medically Important Insect Vectors-I | Unit 7 | Siphonaptera/Fleas as Disease Vectors | Xenopsylla cheopis adaptations, blocked proventriculus, three plague forms | Q18 |
| Block 2: Medically Important Insect Vectors-I | Unit 8 | Siphunculata/Lice as Disease Vectors | Body, head and pubic lice, epidemic typhus, trench fever, maculae caeruleae | Q16, Q17 |
| Block 2: Medically Important Insect Vectors-I | Unit 9 | Hemiptera/Bugs as Disease Vectors | Triatomine identifying features, faecal transmission of T. cruzi, organ of Berlese | Q19 |
| Block 3: Medically Important Insect Vectors-II | Unit 10 | Dipterans as Disease Vectors-I (Anopheles Mosquitoes) | Plasmodium in liver, RBC and mosquito, RDT diagnosis, SIT and CRISPR control | Q7, Q8 |
| Block 3: Medically Important Insect Vectors-II | Unit 11 | Dipterans as Disease Vectors-II (Culex Mosquitoes) | Wuchereria bancrofti and elephantiasis, pigs as JE amplifier hosts | Q9, Q10 |
| Block 3: Medically Important Insect Vectors-II | Unit 12 | Dipterans as Disease Vectors-III (Aedes Mosquitoes) | Container breeding, urban and sylvatic dengue cycles, temephos and Bti | Q11 |
| Block 4: Medically Important Insect Vectors-III and IVM | Unit 13 | Dipterans as Disease Vectors-IV (Sand Flies) | Phlebotomus argentipes, amastigote and promastigote forms, PKDL, elimination target | Q12, Q13 |
| Block 4: Medically Important Insect Vectors-III and IVM | Unit 14 | Dipterans as Disease Vectors-V (House Flies) | Contact, vomit drop and faecal spread, five myiasis types, 5 to 6 day life cycle | Q14, Q15 |
| Block 4: Medically Important Insect Vectors-III and IVM | Unit 15 | Integrated Vector Management (IVM) | WHO 2012 key elements, ovitraps and CO2 traps, Gambusia, rotation against resistance | Q20, Q21 |
BZYET 143 Important Questions by Topic Frequency
Metamorphosis and human lice appeared in all 6 BZYET-143 papers from December 2023 to June 2026, making them the safest topics to prepare first.
The count below comes from the frequency table inside the guess paper. Papers from earlier years were also read, but only the six latest are tabulated. You can check any paper yourself through the IGNOU Previous Year Question Paper collection before you plan your week.
| Topic | Papers asked | Answered in |
|---|---|---|
| Types of metamorphosis | 6 of 6 | Q2, Q22 |
| Body, head and pubic lice | 6 of 6 | Q16, Q17 |
| Legs and wing modifications | 5 of 6 | Q5, Q22 |
| Haemolymph and hemocytes | 5 of 6 | Q4 |
| Compound eye, ommatidia and rhabdome | 5 of 6 | Q4, Q23 |
| Vector, carrier, mechanical vs biological vector | 4 of 6 | Q22 |
| Sand flies, kala-azar and Leishmania | 4 of 6 | Q12, Q13 |
| IVM concept, mechanical and biological control | 4 of 6 | Q20, Q21 |
| Housefly transmission and control | 4 of 6 | Q14 |
| Fleas and plague | 4 of 6 | Q18 |
| Reduviid bug and Chagas disease | 4 of 6 | Q19 |
| Aedes life cycle and dengue | 2 of 6 | Q11 |
| Japanese Encephalitis | 1 of 6 | Q10 |
A pattern worth noting: Block 2 insects rarely come alone. Lice questions often pair medical importance with morphology, and flea questions pair plague with body adaptations, so learn both halves together.
Index of All 23 Questions in the BZYET 143 Guess Paper
The full PDF answers 23 questions; the 5 marked as samples are solved above and the other 18 are in the PDF.
| No. | Question topic | Block | Marks | Priority | On this page |
|---|---|---|---|---|---|
| Q1 | Outline classification of Class Insecta | Block 1 | 10 | HIGH | Full PDF |
| Q2 | Apterygote orders and types of metamorphosis | Block 1 | 5+5 | HIGH | Full PDF |
| Q3 | Mouthpart modifications and two vector orders | Block 1 and 2 | 5+5 | HIGH | Full PDF |
| Q4 | Short notes on haemolymph, circulation and compound eye | Block 1 | 2×5 | HIGH | Full PDF |
| Q5 | Short notes on types of legs and wing modifications | Block 1 | 2×5 | MEDIUM | Full PDF |
| Q6 | Modes of transmission and vectorial capacity | Block 1 | 5+5 | HIGH | Sample |
| Q7 | Life cycle of malaria parasite with diagram | Block 3 | 10 | HIGH | Sample |
| Q8 | Malaria symptoms, diagnosis, treatment and genetic control | Block 3 | 5+5 | HIGH | Full PDF |
| Q9 | Culex-borne diseases and pathogenic effects of W. bancrofti | Block 3 | 5+5 | HIGH | Full PDF |
| Q10 | Japanese Encephalitis: agent, transmission, diagnosis, treatment | Block 3 | 10 | MEDIUM | Full PDF |
| Q11 | Aedes life cycle, dengue transmission and control | Block 3 | 10 | MEDIUM | Full PDF |
| Q12 | Sand fly species, kala-azar transmission and control | Block 4 | 10 | HIGH | Sample |
| Q13 | Leishmania donovani life cycle and kala-azar elimination | Block 4 | 5+5 | HIGH | Full PDF |
| Q14 | Housefly diseases, ways of transmission and control | Block 4 | 10 | HIGH | Full PDF |
| Q15 | Myiasis and life cycle of housefly | Block 4 | 5+5 | MEDIUM | Full PDF |
| Q16 | Body louse morphology, life cycle and medical importance | Block 2 | 10 | HIGH | Full PDF |
| Q17 | Medical importance of three types of human lice | Block 2 | 10 | HIGH | Sample |
| Q18 | Rat flea life cycle, adaptations and plague | Block 2 | 10 | HIGH | Full PDF |
| Q19 | Triatominae bugs and Chagas disease | Block 2 | 5+5 | HIGH | Full PDF |
| Q20 | IVM key elements and avoiding insecticide resistance | Block 4 | 5+5 | HIGH | Sample |
| Q21 | Mechanical and biological control in IVM | Block 4 | 10 | HIGH | Full PDF |
| Q22 | Differentiate between pairs of terms (10 pairs) | Blocks 1 to 4 | 4×2.5 | HIGH | Full PDF |
| Q23 | Compulsory Q1 practice set | Blocks 1 to 4 | 5×1 + 5×1 | HIGH | Full PDF |
These IGNOU BZYET 143 Important Questions are not a promise of the exact paper. They are the topics that repeated most, answered once in exam form, so any rewording in the hall still points to an answer you have already practised.
BZYEL 144 Practical File Index for BZYET 143 Learners
BZYEL-144 is the separate 2 credit laboratory course that goes with BZYET-143, and it is not part of this guess paper. The theory exam never asks you to submit a practical file, but most BSCG Zoology learners take both courses in the same session.
The index below shows how a typical BZYEL-144 record is organised, linked to the theory units that support each section. Your counsellor's experiment list always takes priority.
| Practical file section | Theory unit | What you record |
|---|---|---|
| Certificate, index and lab safety page | All units | Counsellor signature, dates of each session, rules for handling specimens |
| Study of mosquito larvae and adults: Anopheles, Culex, Aedes | Units 10 to 12 | Resting posture, siphon vs no siphon, palps and wing scale differences |
| Study of sand fly and housefly specimens | Units 13 and 14 | Hairy wings of Phlebotomus, sponging mouthparts and pulvilli of Musca |
| Study of louse, flea and bug specimens | Units 7 to 9 | Clinging legs of Pediculus, laterally flat Xenopsylla, triatomine proboscis |
| Mouthparts, antennae and leg mounts | Unit 2 | Labelled sketches of piercing-sucking and sponging types, aristate antenna |
| Vector control and IVM record | Unit 15 | Ovitrap or larvivorous fish observation, notes on ITNs and LLINs |
Who Studies BZYET 143 Insect Vectors and Vector Borne Diseases
BZYET-143 is studied in IGNOU's Bachelor of Science (General) (BSCG) as a Discipline Specific Elective for learners who chose Zoology. It usually sits alongside BZYET-141 Immunology as the other Zoology elective option.
If you are clearing more than one elective, the matching BSCG Guess Paper sets for your other courses follow the same layout. That keeps your revision method the same across papers, which saves time in the last two weeks.
This paper also suits learners who failed BZYET-143 once and are reappearing. The priority tags help you rebuild quickly without reading all fifteen units again from page one.
7-Day BZYET 143 Revision Plan Using the Guess Paper
Seven days are enough to cover all 23 answers if you revise one block group per day and keep the last day for a timed mock.
| Day | Focus | Questions to learn |
|---|---|---|
| Day 1 | Block 1 classification and morphology | Q1, Q2, Q3, Q5 |
| Day 2 | Life processes and vector concepts | Q4, Q6, Q23 |
| Day 3 | Lice, fleas and bugs | Q16, Q17, Q18, Q19 |
| Day 4 | Anopheles and malaria with the diagram | Q7, Q8 |
| Day 5 | Culex and Aedes diseases | Q9, Q10, Q11 |
| Day 6 | Sand flies, houseflies and IVM | Q12 to Q15, Q20, Q21 |
| Day 7 | Timed mock: Q1 plus any four, then Q22 pairs | Q22, Q23 |
Draw the malaria and Leishmania diagrams at least twice from memory before Day 7. Examiners give real marks for labels, and a neat diagram also saves words in a 10 mark answer.
How to Order the Complete BZYET 143 Solved Guess Paper
Message 9899436384 on WhatsApp, confirm the course code BZYET-143, pay, and receive the full 24-page PDF on the same chat.
The IGNOU BZYET 143 Solved Guess Paper you receive holds all 23 answers, which means the 18 you have not seen on this page, along with the frequency table and exam strategy page. Orders sent during working hours usually arrive within minutes.
Many learners also ask for this IGNOU BZYET 143 Guess Paper together with their other BSCG courses in one message. Just list every course code you need, and the team replies with the combined details.
BZYET 143 Insect Vectors and Vector Borne Diseases FAQs
Quick answers to the questions BZYET-143 learners ask most before ordering. For anything else, including Insect Vectors and Vector Borne Diseases Important Questions for your specific session, message the team on WhatsApp.
What does the IGNOU BZYET 143 guess paper for Insect Vectors and Vector Borne Diseases contain?
It contains 23 solved questions that cover all four blocks of BZYET-143. You get full 10 mark answers, 5+5 answers, short notes, ten differentiate pairs in tables, two labelled life cycle diagrams and a Q1 practice set. Each answer follows the IGNOU textbook, uses correct scientific names and ends with a short conclusion you can reproduce in the exam hall.
Which BZYET 143 topics are asked most often in IGNOU exams?
Types of metamorphosis and the three human lice appeared in all six papers from December 2023 to June 2026. Legs and wings, haemolymph and the compound eye appeared in five. Sand flies, IVM, houseflies, fleas and the Reduviid bug each appeared in four. These topics carry HIGH priority in the guess paper and deserve most of your revision time.
What is the exam pattern of BZYET 143 Insect Vectors and Vector Borne Diseases?
The BZYET-143 term-end exam runs for 2 hours and carries 50 marks. Question 1 is compulsory and has one-line answers and a match the columns part worth 10 marks. From Questions 2 to 7 you attempt any four, each worth 10 marks, set as full questions, 5+5 parts, short notes or differentiate pairs. Plan about 20 minutes per question.
How many blocks and units are there in BZYET 143?
BZYET-143 has two volumes, four blocks and fifteen units. Block 1 introduces insects, Block 2 covers fleas, lice and bugs, Block 3 covers Anopheles, Culex and Aedes mosquitoes, and Block 4 covers sand flies, houseflies and Integrated Vector Management. The guess paper maps every one of its 23 questions to these blocks, so you always know which unit to open.
Are the BZYET 143 guess paper answers written from the IGNOU textbook?
Yes. Every answer is written from the BZYET-143 self learning material, so definitions, species names and numbers match what the examiner expects. The language is simplified into short numbered points, which makes each answer easier to memorise. Prateek Talwar prepared the answers and Sheetal Kirola reviewed them for accuracy against the textbook before the 2026 release.
Does the BZYET 143 guess paper include labelled diagrams?
Yes. The PDF has a labelled life cycle diagram of the malaria parasite in human and female Anopheles, and a second diagram of Leishmania donovani in human and female sand fly. Both show arrows for the infecting bite, so you can redraw them quickly. Questions that ask for a well-labelled diagram usually carry a full 5 or 10 marks.
Is the BZYEL 144 practical file included with the BZYET 143 guess paper?
No. BZYEL-144 is the separate two credit laboratory course for Insect Vectors and Vector Borne Diseases, and it is assessed through practical sessions and a record. The guess paper covers only the BZYET-143 theory exam. The practical file index on this page shows the sections a typical record holds, but always follow the experiment list in your BZYEL-144 lab manual.
How can I get the complete BZYET 143 guess paper with all answers?
Send a WhatsApp message to 9899436384 and ask for the BZYET-143 guess paper. The team shares the price, takes payment and sends the full 24-page PDF with all 23 answers, including the 18 that are not shown on this page. Orders placed during working hours are usually delivered within a few minutes on the same WhatsApp chat.