UPSC Civil Services Main 2024 Zoology Paper II PDF

Central Government Jobs Administrative / Civil Services 2024

  • Year 2024
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages Hindi & English

Exam Details

Detail Information
Examination Civil Services (Main) Examination
Year 2024
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 for the UPSC Civil Services (Main) Examination held in 2024. The paper carries a maximum of 250 marks and candidates are allowed three hours to complete it. It consists of eight questions divided into two sections, with candidates required to answer five questions in total. Questions 1 and 5 are compulsory, and at least one question must be attempted from each section. This paper is crucial for aspirants aiming to secure a position in the Civil Services, providing a detailed assessment of their knowledge in advanced zoological concepts.

Major Topics Covered

  • Polytene chromosome
  • Male and female heterogamety
  • Chromosomal aberrations
  • Geographic and reproductive isolation
  • Molecular mutations
  • Endoplasmic reticulum
  • Heterochromatin and euchromatin
  • Signal molecules
  • Sex-determination
  • Genic balance theory

Why This Paper is Important

  • Useful for 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 2024 Zoology Paper I
  • UPSC Civil Services Main 2023 Zoology Paper II
  • UPSC Civil Services Main 2024 Botany Paper II
  • UPSC Civil Services Main 2024 Zoology Paper II Answer Key
  • UPSC Mains 2024 Zoology Paper II Solutions
  • UPSC Civil Services Main Zoology Syllabus
  • Zoology Optional Subject Syllabus for UPSC Mains
  • UPSC Civil Services Main Exam Pattern

Instructions

  • 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.
  • Word limit in questions, wherever specified, should be adhered to.
  • 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:

(a) बहुपट्टी गुणसूत्र Polytene chromosome

(b) उदाहरण सहित नर विषमयुग्मनी (हेटरोगैमिटी) एवं मादा विषमयुग्मनी के बीच अंतर Difference between male heterogamety and female heterogamety with examples

(c) गुणसूत्री विपथन के प्रकार Types of chromosomal aberrations

(d) भौगोलिक बनाम प्रजननात्मक पृथक्करण Geographic versus reproductive isolation

(e) आणविक उत्परिवर्तन के मुख्य प्रकार तथा लक्षणप्ररूप (फीनोटाइप) पर उनका प्रभाव Main types of molecular mutations and their effect on phenotype

Section A

Q2. खुरदरी तथा चिकनी अंतर्द्रव्यी जालिका की सूक्ष्म संरचना का विवरण दीजिए। कोशिकीय स्रवण में अंतर्द्रव्यी जालिका की भूमिका की भी चर्चा कीजिए। Give an account of ultrastructure of rough and smooth endoplasmic reticulum. Also discuss the role of endoplasmic reticulum in cell secretion.

(a) विषमक्रोमेटिन (हेटरोक्रोमेटिन) तथा यूक्रोमेटिन की संरचना तथा कार्यों में उदाहरण सहित अंतर स्पष्ट कीजिए। Distinguish between heterochromatin and euchromatin in their structure and function with examples.

(b) संकेतन अणु (सिग्नल मॉलिक्यूल) क्या हैं? संकेतन मार्ग में दोष किस प्रकार रोगात्मक (पैथोलॉजिकल) परिवर्तन उत्पन्न करते हैं? What are signal molecules? How do defects in signalling pathway cause pathological changes?

Section A

Q3. लिंग-निर्धारण क्या है? ड्रोसोफिला में लिंग-निर्धारण के जीनी संतुलन (जीनिक बैलेंस) सिद्धांत का विवरण असामान्य गुणसूत्रप्ररूपों (कैरियोटाइप) के उदाहरणों सहित दीजिए। What is sex-determination? Give an account of genic balance theory of sex-determination in Drosophila with examples from abnormal karyotypes.

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Frequently asked questions

What is the name of the exam?

The exam is the Civil Services (Main) Examination.

Which paper is this question paper for?

This is for Zoology Paper II.

What is the conducting body?

The conducting body is UPSC.

What is the maximum marks for this paper?

The maximum marks for Zoology Paper II is 250.

What is the time allowed for this paper?

The time allowed is Three Hours.

How many questions are there in total?

There are eight questions in total.

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