Kerala PSC Scientific Officer Biology Previous Year Question Papers PDF Download

Kerala PSC Scientific Officer Biology previous year question papers PDF helps aspirants understand the type of questions asked by Kerala PSC and practise applying their Botany and Zoology knowledge in an exam-oriented way. Solving previous papers also helps identify areas that need more revision and practice.

For candidates preparing for the Kerala PSC Scientific Officer Biology 2027 post under the Kerala Police Service – Forensic Science Laboratory, download previous year question papers, answer keys and useful preparation guidance for the upcoming Kerala PSC Scientific Officer 2027 recruitment.

Kerala PSC Scientific Officer Biology Previous Year Question Papers

Kerala PSC Scientific Officer Biology Previous Year Question Papers for recently conducted exams are available in the KPSC official website. Kerala PSC has conducted Scientific Officer Biology examinations under different category numbers. 

Kerala PSC Scientific Officer Biology Previous Year Question Papers PDF Download Links

The table below provides the available Kerala PSC Scientific Officer Biology previous year question papers with answer keys in PDF, including papers from 2021, 2022 and 2024. Candidates preparing for Kerala PSC Scientific Officer 2027 can use these papers for systematic practice and revision. The 2021 paper is from Category No. 025/2020, the 2022 paper from special recruitment Category No. 113/2022, and the 2024 paper from Category No. 634/2023.
 

Kerala PSC Scientific Officer Biology Previous Year Questions and Answers

Practising KPSC Scientific Officer previous year questions can help candidates understand how Kerala PSC tests topics from Botany, Zoology and other relevant areas in the Scientific Officer Biology exam.

Below, we have provided selected Kerala PSC Scientific Officer Biology previous year questions along with their answers for practice and revision. Try solving each question on your own first, then check the answer and use it to strengthen your understanding of the topic.

Question 1 

Find out the measure of central tendency which requires data arrangement in descending or ascending order for its calculation. 

A) Arithmetic mean 

B) mode 

C) median 

D) All of the above 

Answer: C. Median

Question 2 

Zinc-fingers are important in eukaryotic cell metabolism because they are 

A) Structural motifs in many dNA-binding proteins 

B) Catalytic site of many metabolic enzymes 

C) Needed for chromosome organization 

D) Used in RNA silencing 

Answer: A. Structural motifs in many dNA-binding proteins 

Question 3 

Which of the following is not the part of dNA polymerase III holoenzyme ? 

A) SSB proteins 

B) β-clamps 

C) Core polymerases 

D) γ-clamp loader 

Answer: A. SSB proteins 

Question 4 

Which of the following is not an example of transmembrane transport between different sub-cellular compartments ? 

A) Transport from mitochondrial intermembrane space into the mitochondrial matrix 

B) Transport from cytoplasm into the lumen of endoplasmic reticulum 

C) Transport from endoplasmic reticulum to Golgi complex 

D) Transport from stroma into thylakoid space 

Answer: C. Transport from endoplasmic reticulum to Golgi complex 

Question 5 

The design of two oligonucleotide primers is the key to the success of a PCR reaction. Choose the statement which is not correct about the primers. 

A) The primers have to be complementary to the sequences flanking the target dNA. 

B) They must be complementary to each other. 

C) The primers have to be matched in their G + C content. 

D) They should have similar annealing temperature. 

Answer: B. They must be complementary to each other.

Question 6 

Which one of the following microscopy works on the principle of interferometry to gain information about the optical path length of the sample, to see otherwise invisible features ? 

A) Nomarski microscopy 

B) Fluorescence microscopy 

C) Scanning electron microscopy 

D) Scanning tunneling microscopy 

Answer: A. Nomarski microscopy 

Question 7 

Concentration of which of the following hormones increase in plants during senescence? 

A) Auxin and gibberellin 

B) Cytokinins 

C) Ethylene and ABA 

D) Cytokinin and auxin 

Answer: C. Ethylene and ABA 

Question 8 

Which of the following statements is incorrect ? 

A) Vernalized plant can be devernalized by treatment with high temperature. 

B) Vernalization shortens the vegetative period of the plants. 

C) Vernalization increases the cold resistance of the plants. 

D) Vernalization is an anaerobic process. 

Answer: D. Vernalization is an anaerobic process. 

Question 9 

Fluorescence In Situ Hybridization (FISH) techniques are used for the detection of 

A) mRNA 

B) Glycoprotein 

C) Specific DNA 

D) Protein sequences 

Answer: C. Specific DNA 

Question 10 

Artificial competence in cells using calcium chloride method was discovered by 

A) Mandel and Higa 

B) John Sanford 

C) Douglas Bangham 

D) Newmann and Potter 

Answer: A. Mandel and Higa 

Read More at:

• Kerala PSC Scientific Officer 2027: Notification, Eligibility, Syllabus, & Preparation Guide
• Kerala PSC Scientific Officer Eligibility Criteria 2027: Qualification & Age Limit
• Kerala PSC Scientific Officer Advice Status 2026, Cut Off, Rank List & Shortlist
• How to Prepare for Kerala PSC Scientific Officer 2027: Study Plan & Preparation Strategy
• Kerala PSC Scientific Officer Physics Syllabus 2027 PDF Download & Detailed Topics
• Kerala PSC Scientific Officer Biology Syllabus 2027 PDF Download & Detailed Topics

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If you are preparing for KPSC Scientific Officer Biology, use previous year papers alongside your syllabus and make every practice session an opportunity to identify and improve your weak areas.

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Kerala PSC Scientific Officer Biology Frequently Asked Questions

What is the question paper code for Scientific Officer Biology 2021?

The question paper code for the Category No. 025/2020 Scientific Officer Biology examination conducted on 25 January 2021 was 018/2021.

When was the Kerala PSC Scientific Officer Biology 2024 exam conducted?

The Scientific Officer Biology examination under Category No. 634/2023 was conducted on 12 November 2024. The question paper code was 158-2024.

Is the Scientific Officer Biology syllabus at postgraduate level?

The official Kerala PSC examination programme for Category No. 025/2020 identified Zoology and Botany as PG-level subjects. The later Category No. 634/2023 detailed syllabus also provides subject modules for the Biology post. 

How should I use Scientific Officer Biology PYQs for preparation?

Solve the complete paper first, check your answers using the answer key, classify your mistakes and map each question to the relevant syllabus topic. Then revise the weak areas and solve the paper again after sufficient revision.

Is Kerala PSC Scientific Officer Biology related to Forensic Science?

Yes. The relevant Scientific Officer Biology recruitment is associated with the Kerala Police Service (Forensic Science Laboratory). The official Kerala PSC pages identify both Category No. 025/2020 and Category No. 634/2023 with this department. 

When will the Kerala PSC Scientific Officer Biology 2027 notification be released?

The 2027 notification date should be confirmed through the official Kerala PSC recruitment updates when announced. Kerala PSC Scientific Officer Biology 2027 notification will be released soon.

What are the qualifications required to become a KPSC Scientific Officer Biology?

Eligibility depends on the recruitment notification and applicable category. Candidates should check the official Kerala PSC notification for the specific Scientific Officer Biology recruitment rather than relying on eligibility conditions from an earlier category.