UPSC Civil Services Zoology Paper II 2025 Question Paper PDF

Central Government Jobs Other Jobs 2025

  • Year 2025
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages Hindi & English

Exam Details

Detail Information
Examination UPSC Civil Services (Main) Examination
Year 2025
Conducting Body UPSC
Paper Zoology Paper II
Subject Zoology
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Mixed

This is the Zoology Paper II from the UPSC Civil Services (Main) Examination held in 2025. The paper is designed to test candidates' in-depth knowledge of Zoology, with a total of 8 questions divided into two sections. Candidates are required to answer five questions in total, with questions 1 and 5 being compulsory. The paper allows for answers in both Hindi and English and carries a maximum of 250 marks, with a time limit of three hours. This question paper is a crucial resource for aspirants preparing for the UPSC Mains examination, providing insights into the scope and depth of the subject.

Major Topics Covered

  • Zoology
  • Protein sorting in Golgi apparatus
  • Lampbrush chromosome
  • Thalassemia
  • Linkage
  • Speciation
  • Plasma membrane
  • Diffusion
  • Mutations
  • Natural selection
  • Inheritance
  • Evolution
  • Mimicry
  • Protein synthesis
  • Prokaryotes

Why This Paper is Important

  • Useful for UPSC Civil Services (Main) Examination preparation
  • Helps understand the latest exam pattern
  • Useful for practice and self-assessment
  • Covers frequently asked General Studies topics
  • Helpful for analysing question trends

Related Resources

  • UPSC Civil Services Main Zoology Paper I 2025
  • UPSC Civil Services Main General Studies Paper I 2025
  • UPSC Civil Services Main Essay Paper 2025
  • UPSC Civil Services Main Zoology Paper II 2025 Answer Key
  • UPSC Civil Services Main Zoology Syllabus
  • UPSC Civil Services Main Exam Pattern
  • UPSC Civil Services Main Exam Pattern
  • UPSC Civil Services (Main) Examination

Instructions

  • पुस्तिका के मुखपृष्ठ पर निर्दिष्ट स्थान पर किया जाना चाहिए।
  • प्राधिकृत माध्यम के अतिरिक्त अन्य किसी माध्यम में लिखे गए उत्तर पर कोई अंक नहीं मिलेंगे।
  • जहाँ भी आवश्यक समझा जाए, वहाँ अपने उत्तरों को उपयुक्त रेखाचित्रों एवं आरेखों सहित स्पष्ट कीजिए ।
  • प्रश्नों के प्रयासों की गणना क्रमानुसार की जाएगी।
  • आंशिक रूप से दिए गए प्रश्नों के उत्तर को भी मान्यता दी जाएगी यदि उसे काटा न गया हो ।
  • प्रश्न-सह-उत्तर पुस्तिका में खाली छोड़े गए कोई पृष्ठ अथवा पृष्ठ के भाग को पूर्णतः काट दीजिए ।

  • There are EIGHT questions divided in TWO SECTIONS and printed both in HINDI and in ENGLISH.
  • Candidate has to attempt FIVE questions in all.
  • Question Nos. 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE question from each Section.
  • The number of marks carried by a question/part is indicated against it.
  • Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this Question-cum-Answer (QCA) Booklet in the space provided.
  • No marks will be given for answers written in a medium other than the authorized one.
  • Illustrate your answers with suitable sketches and diagrams, wherever considered necessary.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer Booklet must be clearly struck off.

Questions (page 2)

Section A

Q1. निम्नलिखित प्रत्येक पर लगभग 150 शब्दों में लिखिए:
Write on the following in about 150 words each:

(1.(a)) गॉल्जी उपकरण में प्रोटीन छँटाई
Protein sorting in Golgi apparatus

(1.(b)) लैम्पब्रश गुणसूत्र की संरचना एवं कार्य
Structure and function of Lampbrush chromosome

(1.(c)) थैलेसेमिया के लक्षण, कारण तथा उपचार
Symptoms, causes and treatment of thalassemia

(1.(d)) सहलग्नता की युग्मन एवं विकर्षण प्रावस्थाऐं
Coupling and repulsion phases of linkage

(1.(e)) समस्थानिक एवं विस्थानिक जाति-उद्भवन
Sympatric and allopatric speciation

(a) Protein sorting in Golgi apparatus लैम्पब्रश गुणसूत्र की संरचना एवं कार्य 1.

(b) Structure and function of Lampbrush chromosome 10 थैलेसेमिया के लक्षण, कारण तथा उपचार 1.

(c) Symptoms, causes and treatment of thalassemia 10 सहलग्नता की युग्मन एवं विकर्षण प्रावस्थाऐं 1.

(d) Coupling and repulsion phases of linkage समस्थानिक एवं विस्थानिक जाति-उद्भवन 1.

(e) Sympatric and allopatric speciation 10 प्रद्रव्य झिल्ली की संरचना का वर्णन कीजिए । 2.(a)

(i) Describe composition of plasma membrane. 10 प्रद्रव्य झिल्ली के आर-पार होने वाले सुकृत एवं निष्क्रिय विसरण के बीच सोदाहरण विभेदन 2.(a)(ii) कीजिए । Differentiate between facilitated and passive diffusion across the membrane with examples. उत्परिवर्तन, जनसंख्या एवं प्राकृतिक चयन में विविधताओं को कैसे प्रभावित करता है, इसकी 2.

Section A

Q2. निम्नलिखित प्रत्येक पर लगभग 150 शब्दों में लिखिए:
Write on the following in about 150 words each:

(2.(a)(i)) प्रद्रव्य झिल्ली की संरचना का वर्णन कीजिए ।
Describe composition of plasma membrane.

(2.(a)(ii)) प्रद्रव्य झिल्ली के आर-पार होने वाले सुकृत एवं निष्क्रिय विसरण के बीच सोदाहरण विभेदन कीजिए ।
Differentiate between facilitated and passive diffusion across the membrane with examples.

(2.(b)) उत्परिवर्तन, जनसंख्या एवं प्राकृतिक चयन में विविधताओं को कैसे प्रभावित करता है, इसकी व्याख्या कीजिए ।
Explain how mutations affect variations in population and natural selection.

(2.(c)) मानव उदाहरणों का उपयोग करते हुए अप्रभावी अलिंगसूत्री एवं लिंग-सहलग्निक वंशागति के लिये वंशावलियों का रेखाचित्र बनायें ।
Draw pedigrees for autosomal recessive and sex-linked inheritance using examples from human.

Section A

Q3. निम्नलिखित प्रत्येक पर लगभग 150 शब्दों में लिखिए:
Write on the following in about 150 words each:

(3.(a)(i)) विकास के संश्लिष्ट सिद्धान्त का वर्णन कीजिए ।
Describe the synthetic theory of evolution.

(3.(a)(ii)) समुचित उदाहरणों के साथ कीटों में अनुहरण के सामान्य प्रकारों का वर्णन कीजिए।
Describe common types of mimicry in insects with suitable examples.

(3.(b)) प्राक्केन्द्रकी कोशिकाओं में प्रोटीन संश्लेषण के दौरान शृंखला दीर्घीकरण की प्रक्रिया की विवेचना कीजिए ।
Discuss the process of chain elongation during protein synthesis in prokaryotes.

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Frequently asked questions

What is the name of the exam?

The exam is the UPSC Civil Services (Main) Examination.

What is the subject and paper code?

The subject is Zoology, and the paper is Paper II with the code SLPM-B-ZOL.

What is the year of the examination?

The examination year is 2025.

Who conducts the Civil Services Main Examination?

The examination is conducted by the UPSC (Union Public Service Commission).

What is the maximum marks for Zoology Paper II?

The maximum marks for Zoology Paper II is 250.

What is the time allowed to complete the paper?

The time allowed to complete the paper is three hours.

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