WB ANM GNM Life Science Important Chapters 2025

Here are WB ANM GNM Life Science Important Chapters 2025, which you need to focus on. Each chapter consists of scoring sub-subjects and repeated questions, which will help you maximize your concentration in preparation for marks.

Chapter	Key Subtopics to Focus On	Why It’s High-Scoring / Repeated
Cellular Organization	Cell structure, organelles, cell division, basics of tissues	Fundamentals; many questions come from here every year
Fundamental Processes	Photosynthesis, Respiration, Nutrition, Excretion	Links with daily life; repeated MCQs; formula/concept based
Systems Physiology (Plant & Animal)	Circulatory, Digestive, Respiratory, Reproductive systems; Plant transport, growth	Big chunk of marks; diagrams + functions asked often
Inheritance Biology	Mendel’s laws, DNA/RNA basics, heredity patterns, genetic diseases (basic)	Often tested with direct MCQs; less likely to be tricky if basics are strong
Ecological Principles	Ecosystems, Food chains/webs, Pollution, Conservation, Biomes	Appears regularly; connects with GK/current affairs sometimes
Diversity of Life Forms	Classification of plants & animals, characteristics, kingdoms, phyla basics	Helps score in taxonomy questions, which are low effort if memorized well
Cell Signaling & Communication	Hormones, neuron basics, receptors, signaling pathways	Less frequent but high impact; some tricky MCQs come from here
Application & Methods in Biology	Practical biology, experimental methods, microscopes, staining, biotechnology basics	Useful for Category-2 questions; also helps with MCQ accuracy

Now that we've learned about the most important chapters in WB ANM GNM Life Science 2025, let's learn how to study each chapter step by step in an easy way with tips and example questions.

Tips to Master Cellular Organization Chapter

Differentiate between animal and plant cell diagrams. Label all organelles and cytoplasmic inclusions such as the nucleus, mitochondria, and chloroplasts.
Revise functions of the organelles into simple one-liners (for example, mitochondria: powerhouse; chloroplasts: photosynthesis).
Know the types of tissues (epithelial, muscular, connective, and nervous) by everyday solutions.
Practice differentiation (e.g., prokaryotic vs. eukaryotic; plant vs. animal cell).
Talk about ribosomes, lysosomes, and Golgi bodies with flashcards.

Example Questions for Cellular Organization

Question	Options	Answer
Which organelle is known as the “powerhouse of the cell”?	(a) Ribosome (b) Mitochondria (c) Nucleus (d) Golgi body	(b) Mitochondria
Plant cells differ from animal cells due to the presence of:	(a) Lysosomes (b) Centrosomes (c) Chloroplast (d) Mitochondria	(c) Chloroplast

Chapter - Fundamental Processes

Focus on photosynthesis: equation, chlorophyll role, light vs. dark reaction.
As for respiration, figure out the differences between aerobic respiration and anaerobic respiration, glycolysis, and ATP (the energy currency).
Understand digestion basics - Mouth, stomach, and small intestine-Commands of enzymes like amylase and pepsin.
Learn using flow diagrams (food - energy, glucose - ATP).
Compare and contrast photosynthesis versus respiration in a simple table.
Practice the equations (Photosynthesis: 6CO₂ + 6H₂O - C₆H₁₂O₆ + O₂).

Example for Fundamental Processes Chapter

Question	Options	Answer
Which gas is released during photosynthesis?	(a) Carbon dioxide (b) Oxygen (c) Nitrogen (d) Hydrogen	(b) Oxygen
The energy currency of the cell is:	(a) DNA (b) RNA (c) ATP (d) Protein	(c) ATP

Tips to Master Systems Physiology (Plant & Animal)

Human dissection physiology - majorly the circulatory, respiratory, digestive, excretory, nervous, and reproductive systems.
Plant Physiology: transport (xylem/phloem); transpiration and briefly photosynthesis.
Draw diagrams- heart, nephron, lungs, plant vascular system, label clearly.
Make mnemonics- e.g. for cranial nerves, blood flow, or plant tissues.
Revise often- 30-40% of Life Science questions in WB ANM GNM exams are guaranteed to come from this chapter.

Example Questions on Systems Physiology

Question	Options	Answer
Which blood vessels carry oxygenated blood from the heart to the body?	(a) Veins (b) Arteries (c) Capillaries (d) Venules	(b) Arteries
In plants, the xylem is responsible for transporting:	(a) Sugars (b) Water (c) Proteins (d) Minerals	(b) Water

Inheritance Biology Chapter

Mendelian Genetics - comprehend inheritance laws - dominant vs. recessive traits, mono- and dihybrid crosses.
DNA & RNA - structure, function, replication, transcription, and translation.
Flowcharts and tables - relating to gene expression, Punnett squares, types of inheritance.
Relate to Examples - pea plants (Mendel), sickle cell anemia, blood groups.
Revise Terms and definitions - allele, genotype, phenotype, homozygous, heterozygous.

Example Questions on Inheritance

Question	Options	Answer
Mendel’s law of segregation explains:	(a) Separation of alleles during gamete formation (b) DNA replication (c) Protein synthesis (d) Crossing over	(a) Separation of alleles during gamete formation
The process of making RNA from DNA is called:	(a) Replication (b) Translation (c) Transcription (d) Mutation	(c) Transcription

Tips for Ecological Principles

Basics of the ecosystem: understand producers, consumers, decomposers, and energy flow.
Food chains and Food webs: draw diagrams, label trophic levels, and energy transfer efficiency.
Biogeochemical cycles: carbon, nitrogen, and water cycles related to environmental issues.
Population and community ecology: study population growth and carrying capacity or interactions - predation or competition.
Current examples of environment: pollution, global warming, conservation programs in India.

Examples

Question	Options	Answer
Which organism is a primary consumer in a food chain?	(a) Grass (b) Rabbit (c) Fox (d) Hawk	(b) Rabbit
The process by which nitrogen is converted from atmospheric form to usable form for plants is called:	(a) Photosynthesis (b) Nitrogen fixation (c) Respiration (d) Evaporation	(b) Nitrogen fixation

Life Science Chapter on Diversity of Life Forms

Introduction to Classification-level study-Kingdoms, Phyla, Classes, and the main characteristics of each.
Plant diversity-Bryophytes, Pteridophytes, Gymnosperms, Angiosperms. Their reproductive structures must be noted.
Animal diversity-from Porifera to Chordata, with emphasis on symmetry, coelom, and digestive system.
Use charts & diagrams- one-page classification chart serves as a quick revision.
Repeated questions-NCERT examples on key differences between groups are commonly asked.

Example Questions

Question	Options	Answer
Which phylum includes organisms with radial symmetry?	(a) Arthropoda (b) Cnidaria (c) Mollusca (d) Annelida	(b) Cnidaria
Angiosperms are also called:	(a) Gymnosperms (b) Flowering plants (c) Ferns (d) Mosses	(b) Flowering plants

How to learn Cell Signaling & Communication

Understand basics of signaling – study types of signals: chemical, electrical, hormonal.
Cell receptors – memorize types (G-protein, ion channel, tyrosine kinase) and their functions.
Signal transduction pathways – focus on steps like reception, transduction, response; use simple flowcharts.
Examples in humans – link hormones (insulin, adrenaline) to their effects for easier recall.
Practice MCQs – most WB ANM GNM questions are direct from definitions and pathways.

Example for Cell Signaling & Communication

Question	Options	Answer
Which of the following is a G-protein coupled receptor?	(a) Insulin receptor (b) Rhodopsin (c) Ion channel (d) Steroid receptor	(b) Rhodopsin
Signal transduction in cells includes which step?	(a) Reception (b) Transduction (c) Response (d) All of the above	(d) All of the above

Application and Methods in Biology

Laboratory techniques in microscopy, stain techniques, centrifugation, and electrophoresis.
Essentials of experimental design: hypothesis, controls, variables, interpretation of data.
Real-world examples: focus on applications such as PCR, cloning, and even gene editing CRISPR basics in biotechnology. Examples will include agarose gel electrophoresis for DNA separation.
Practice questions: Most MCQs are relatively direct and example-based and focus on processes and methods.

Examples on Application and Methods in Biology

Question	Options	Answer
Which technique is used to separate DNA fragments by size?	(a) Centrifugation (b) Gel electrophoresis (c) Staining (d) Microscopy	(b) Gel electrophoresis
What is the function of a control in an experiment?	(a) To provide variable data (b) To compare results (c) To measure pH (d) To amplify DNA	(b) To compare results

Follow the simple study tips for each chapter and make plenty of drawings or flowcharts to aid memory. Keep studying these important topics daily till you feel confident about the exam. I know at certain times, it may get overwhelming to study all subjects together. Thus, we have a step-by-step plan for you - do check out our 30-Day Roadmap for WB ANM GNM 2025 Exam Preparation!