Concept-Based Biology Classes for CBSE Class 9 & 10 by Rajasivam M

Title: Biology Classes 9–10 (Concept-based Online Course)

Tagline: Deep concepts • guided diagrams • weekly tests — perfect for school and board exams, with strong NEET basics.

Description:
A structured, concept-focused online Biology course for Classes 9 and 10. The course is designed to build strong conceptual foundations through clear explanations and guided diagram practice. Each week includes three focused concept sessions along with one test and discussion session to reinforce learning and track progress. Ideal for school and board exam preparation, and for developing essential NEET-level biological understanding.

Duration & Format:
Total duration: 15 weeks
Weekly structure: 4 sessions per week
• 3 concept-based online classes (1 hour each)
• 1 weekly test and discussion session (45–60 minutes)

Week 1

Class 1 — Introduction & Biomolecules — scientific approach; carbohydrates, proteins, lipids, enzymes: conceptual roles and examples.
Class 2 — Cell Theory & Cell Types — prokaryote vs eukaryote; cell as functional unit.
Class 3 — Cell Organelles (I) — nucleus, mitochondria: structure→function emphasis.
Class 4 — Weekly Test & Discussion 1 — MCQs + short answers on biomolecules & cell basics; common errors review.

Week 2

Class 5 — Cell Organelles (II) — chloroplasts, ribosomes, ER, Golgi: functions and exam cues.
Class 6 — Cell Membrane & Transport — diffusion, osmosis, facilitated transport, active transport (conceptual problems).
Class 7 — Cell Cycle & Mitosis (Conceptual) — stages, biological significance, distinguishing features.
Class 8 — Weekly Test & Discussion 2 — short answers + label an organelle diagram; feedback.

Week 3

Class 9 — Tissues: Plant & Animal — meristematic/permanent; epithelial, connective, muscle, nervous — function & examples.
Class 10 — Plant Kingdom Overview — algae → angiosperms: key characteristics & quick ID cues.
Class 11 — Plant Anatomy Basics — root, stem, leaf (internal structure concepts: xylem, phloem, stomata).
Class 12 — Weekly Test & Discussion 3 — diagrams + short concept questions on tissues & plant basics.

Week 4

Class 13 — Plant Reproduction (Intro) — sexual versus asexual; vegetative propagation concepts.
Class 14 — Animal Kingdom Overview — levels of organization, symmetry, body plans, major phyla highlights.
Class 15 — Structural Adaptations (Examples) — comparative examples from invertebrates & vertebrates.
Class 16 — Weekly Test & Discussion 4 — mixed test (diversity & adaptations) + diagram practice.

Week 5

Class 17 — Human Nutrition (Concepts) — digestive system overview: digestion, absorption & conceptual flow.
Class 18 — Photosynthesis (High-level) — overall equation, raw materials/products, limiting factors (light/dark reaction concept).
Class 19 — Transport in Plants — xylem, phloem, transpiration pull: conceptual models and exam framing.
Class 20 — Weekly Test & Discussion 5 — short answers & diagram on digestion/photosynthesis.

Week 6

Class 21 — Cellular Respiration (Conceptual) — aerobic vs anaerobic; why respiration matters.
Class 22 — Human Respiratory System (Concepts) — lungs, alveoli, mechanism of breathing, gas exchange ideas.
Class 23 — Circulatory System (Concepts) — heart structure, blood components, double circulation & significance.
Class 24 — Weekly Test & Discussion 6 — MCQs + heart diagram labelling & explanation.

Week 7

Class 25 — Excretory System (Conceptual) — kidney structure overview, nephron concept, filtration & urine formation.
Class 26 — Homeostasis & Body Fluids — temperature regulation, osmoregulation, role of kidneys.
Class 27 — Nervous System Basics — neuron structure, impulse transmission, reflex arc (concept sketch).
Class 28 — Weekly Test & Discussion 7 — nephron/reflex arc diagram + conceptual questions.

Week 8

Class 29 — Endocrine System (Concepts) — hormones, major glands and physiological roles (pituitary, thyroid, adrenal, pancreas).
Class 30 — System Integration Examples — nervous + endocrine coordination (stress response, blood sugar regulation).
Class 31 — Plant Mineral Nutrition & Growth Regulators — macro/micronutrients and basic plant hormones (concepts & applications).
Class 32 — Weekly Test & Discussion 8 — case question on system integration + review.

Week 9

Class 33 — Human Reproduction (Male) — structure & conceptual function of male reproductive system.
Class 34 — Human Reproduction (Female) — female reproductive organs, menstrual cycle concept, fertilization overview.
Class 35 — Pregnancy & Reproductive Health — embryonic stages at a high level; contraceptives & basic reproductive health concepts.
Class 36 — Weekly Test & Discussion 9 — reproductive organs diagram + short answer review.

Week 10

Class 37 — Asexual vs Sexual Reproduction — life cycles, examples (budding, spores, vegetative propagation) and advantages/disadvantages.
Class 38 — Basics of Heredity — gene, allele, genotype vs phenotype, trait concepts.
Class 39 — Mendelian Genetics (Monohybrid) — Punnett square, dominant/recessive, simple practice problems.
Class 40 — Weekly Test & Discussion 10 — genetics worksheet + error correction.

Week 11

Class 41 — Chromosomes & Sex Determination — karyotype concept, XY/XX basics, simple inheritance patterns.
Class 42 — Variation & Natural Selection (Conceptual) — sources of variation, selection & adaptive traits (real examples).
Class 43 — Evidence & Mechanisms of Evolution — fossils, homologous structures, concept of speciation (overview).
Class 44 — Weekly Test & Discussion 11 — MCQs + short explanation on evolution concepts.

Week 12

Class 45 — Meiosis (Conceptual Overview) — why meiosis matters for sexual reproduction; conceptual stages & outcomes.
Class 46 — Microorganisms — Beneficial & Harmful — fermentation, antibiotics, pathogens: roles & simple examples.
Class 47 — Intro to Biotechnology (Conceptual) — GM crops, basic idea of DNA tech, simple ethical considerations & safety.
Class 48 — Weekly Test & Discussion 12 — microbes & biotech short test + discussion.

Week 13

Class 49 — Ecology Fundamentals — ecosystem components, producers/consumers/decomposers, energy flow concept.
Class 50 — Food Chains, Food Webs & Pyramids — constructing & interpreting examples; exam tips.
Class 51 — Nutrient Cycles: Carbon & Nitrogen — concept maps, significance, human impact.
Class 52 — Weekly Test & Discussion 13 — food web/nutrient cycle diagram + short Q&A.

Week 14

Class 53 — Biodiversity & Conservation (Concepts) — importance, threats, protected areas and conservation strategies (overview).
Class 54 — Pollution: Causes & Effects — air, water, soil pollution at concept level; simple local examples.
Class 55 — Climate Change & Mitigation Basics — greenhouse effect, consequences, simple actions and policy ideas.
Class 56 — Weekly Test & Discussion 14 — case-based questions on environment + answer framing.

Week 15

Class 57 — Applied Microbiology in Environment — sewage treatment, biofertilizers, bioremediation (conceptual).
Class 58 — Exam Skills: Diagrams & Answer Presentation — how to draw exam-worthy diagrams and write model answers.
Class 59 — NEET-style Concept Practice — objective-thinking, elimination strategies, sample concept MCQs.
Class 60 — Weekly Test & Discussion 15 — mixed mini-test focusing on practical application + review.