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BPSC Zoology Syllabus: Paper I & Paper II Topics

The BPSC Zoology Syllabus is divided into Paper I and Paper II, with 300 marks each, covering topics such as animal diversity, cell biology, genetics, evolution, physiology, ecology, developmental biology, and applied zoology. The syllabus below follows the latest Zoology optional syllabus prescribed by BPSC and will be updated if any revisions are announced.
authorImagePriyanka Gupta11 Jul, 2026
BPSC Zoology Syllabus 2025

The BPSC Combined Competitive Examination allows you to choose Zoology as an optional subject, making it important to understand the complete syllabus before starting your preparation. Since the optional papers carry 600 marks (300 marks each for Paper I and Paper II), knowing the prescribed topics helps you focus on the areas that are part of the examination.

The BPSC Zoology Syllabus includes topics from animal diversity, cell biology, genetics, physiology, ecology, evolution, developmental biology, immunology, biochemistry, and applied zoology. 

BPSC Zoology Syllabus Overview

The table below highlights the key details of the BPSC Zoology optional subject, including the number of papers, marks, exam duration, and the basis of the latest syllabus prescribed by the Bihar Public Service Commission.

Particulars

Details

Exam Name

Bihar Public Service Commission (BPSC) Combined Competitive Examination

Optional Subject

Zoology

Number of Papers

2

Paper I Marks

300

Paper II Marks

300

Total Marks

600

Language of Official Syllabus

Hindi

Syllabus on this Page

English (based on the official BPSC syllabus)

Official Website

bpsc.bihar.gov.in

BPSC Zoology Paper I Syllabus

Paper I mainly focuses on the fundamental principles of zoology. It covers animal diversity, taxonomy, cell biology, genetics, physiology, embryology, ecology, and evolution. A clear understanding of these subjects helps you build a strong conceptual foundation for the optional paper.

BPSC Zoology Paper I Syllabus

Unit

Topics

Non-Chordata

Classification, general organisation, comparative anatomy, life history, adaptive radiation, and economic importance of Protozoa, Porifera, Coelenterata (Cnidaria), Platyhelminthes, Nemathelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, and Hemichordata.

Chordata

Origin and classification of chordates, comparative anatomy, adaptive radiation, affinities, and evolutionary significance of Protochordata, Cyclostomata, Pisces, Amphibia, Reptilia, Aves, and Mammalia.

Animal Diversity & Evolution

Principles of classification, phylogenetic relationships, speciation, evolutionary trends, fossil records, geological time scale, natural selection, and modern concepts of evolution.

Genetics

Mendelian genetics, linkage, crossing over, mutation, sex determination, chromosomal aberrations, gene interaction, population genetics, molecular genetics, DNA replication, transcription, translation, and genetic code.

Developmental Biology

Gametogenesis, fertilisation, cleavage, gastrulation, embryonic development, organogenesis, extra-embryonic membranes, regeneration, and developmental mechanisms.

Comparative Animal Physiology

Digestion, respiration, circulation, excretion, osmoregulation, endocrine glands, nervous system, muscle physiology, sensory physiology, reproduction, and homeostasis.

Ecology

Ecosystem, ecological succession, food chain, food web, ecological pyramids, population ecology, biodiversity, wildlife conservation, environmental pollution, ecological adaptations, and biogeochemical cycles.

Animal Behaviour

Instinct, learning, communication, migration, social behaviour, biological rhythms, orientation, territoriality, and behavioural ecology.

BPSC Zoology Paper II Syllabus

Paper II focuses on advanced concepts of zoology, including cell biology, molecular biology, genetics, evolution, biochemistry, physiology, immunology, developmental biology, parasitology, and applied zoology. This paper evaluates your understanding of modern biological principles along with their practical and research applications. The syllabus below has been prepared from the latest official BPSC Zoology optional syllabus and presented in English for better readability. 

BPSC Zoology Paper II Syllabus

Unit

Topics

Cell Biology

Structure and functions of cell organelles, plasma membrane, nucleus, mitochondria, Golgi complex, endoplasmic reticulum, ribosomes, lysosomes, cell cycle, mitosis, meiosis, chromosome organisation, chromatin structure, heterochromatin, cell cycle regulation, DNA replication, transcription, RNA processing, translation, protein synthesis and transport.

Genetics

Modern concept of gene, genetic code, gene regulation, Mendelian inheritance, linkage, crossing over, recombination, multiple alleles, sex determination, mutations, mutagenesis, pedigree analysis, blood groups, hereditary disorders, recombinant DNA technology, cloning, transgenic animals, genomics, proteomics, DNA fingerprinting, Human Genome Project.

Evolution

Origin of life, Lamarckism, Darwinism, Neo-Darwinism, mutation theory, Hardy-Weinberg equilibrium, natural selection, isolation, speciation, mimicry, adaptive radiation, fossil evidence, continental drift, evolution of horse, elephant, and humans.

Systematics

Principles of taxonomy, zoological nomenclature, International Code of Zoological Nomenclature (ICZN), molecular taxonomy, cladistics, biodiversity and species concepts.

Biochemistry

Structure and properties of carbohydrates, proteins, lipids and nucleic acids, enzymes and enzyme kinetics, vitamins, coenzymes, metabolism of carbohydrates, lipids and proteins, oxidative phosphorylation, bioenergetics and metabolic regulation.

Animal Physiology

Digestion, respiration, blood circulation, excretion, osmoregulation, endocrine glands, hormones, nervous coordination, muscle contraction, reproductive physiology, thermoregulation and physiological adaptations.

Immunology

Innate and acquired immunity, antigen-antibody interactions, immune response, immunoglobulins, major histocompatibility complex (MHC), vaccination, hypersensitivity, autoimmune disorders, immunological techniques.

Developmental Biology

Gametogenesis, fertilisation, cleavage, gastrulation, embryonic induction, organogenesis, differentiation, regeneration, developmental genetics and morphogenesis.

Parasitology

Host-parasite relationships, parasitic adaptations, life cycles, pathogenicity, diagnosis, prevention and control of important protozoan and helminth parasites affecting humans and animals.

Applied Zoology & Biotechnology

Animal biotechnology, genetic engineering, transgenic animals, cloning, stem cell technology, animal cell culture, reproductive biotechnology, conservation biology, wildlife management, biodiversity conservation and modern applications of zoology.

BPSC Zoology Optional Subject Exam Pattern

Understanding the BPSC Zoology Optional Subject Exam Pattern helps you know the paper format, marks, exam duration, and nature of questions before beginning your preparation. The Zoology optional consists of two descriptive papers, with each paper carrying 300 marks and a duration of 3 hours.

BPSC Zoology Optional Subject Exam Pattern

Paper

Subject

Marks

Duration

Question Type

Paper I

Zoology Paper I

300

3 Hours

Descriptive

Paper II

Zoology Paper II

300

3 Hours

Descriptive

Total

Zoology Optional

600

6 Hours

Descriptive

Understanding the BPSC Zoology Syllabus thoroughly is essential for effective preparation, as the optional subject carries significant weight in the examination. Familiarity with the topics covered in Paper I and Paper II can help you plan your studies systematically and focus on important concepts. Candidates should also refer to the official BPSC notification regularly to stay updated with any changes or revisions to the syllabus.

BPSC Previous Year Question Paper

BPSC Eligibility Criteria

BPSC Optional

BPSC Syllabus 

BPSC Exam Pattern 

BPSC Batches 

 

 

BPSC Zoology Syllabus 2026 FAQs

Has the BPSC Zoology Syllabus been revised?

The syllabus on this page is based on the latest official BPSC Zoology optional syllabus. If the Commission announces any revisions through a future notification, this page will be updated accordingly.

How many papers are there in the BPSC Zoology optional subject?

The Zoology optional consists of two papers—Paper I and Paper II, with 300 marks each, making a total of 600 marks.

What are the main subjects covered in the BPSC Zoology Syllabus?

The syllabus includes topics such as Animal Diversity, Cell Biology, Genetics, Evolution, Animal Physiology, Ecology, Developmental Biology, Immunology, Biochemistry, Parasitology, and Applied Zoology.

Is the BPSC Zoology syllabus available in English?

The official syllabus is generally published by BPSC in Hindi. The syllabus provided on this page has been presented in English based on the official document for easier understanding.
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