ISC Class 11th Biology Revised Syllabus 2024-25: Download PDF for full syllabus

Paper I- Theory (3 Hours)

70 Marks 

Practical Work (3 Hours)

• Project Work 
• Practical File  

15 Marks

• 10 Marks
• 5 Marks

S. No.

UNIT

TOTAL WEIGHTAGE 

1

Diversity of Living Organisms

09 Marks

2

Structural Organisation in Animals and Plants 

11 Marks

3

Cell: Structure and Function

15 Marks

4

Plant Physiology

17 Marks

5

Human Physiology

18 Marks

TOTAL

70 Marks

1. Diversity of Living Organisms

(i) The Living World Need for classification; three domains of life; taxonomy and systematics; concept of species and taxonomical hierarchy; binomial nomenclature.

(ii) Biological Classification Five kingdom classification; s alient features and classification of Monera, Protista, Fungi, Plantae and Animalia. Lichens, Viruses andViroids.

(iii)Plant Kingdom 

(iv) Animal Kingdom Animal Kingdom: animal construction - body plan (cell aggregate plan, blind-sac plan and tube-within-tube plan), symmetry (spherical, radial and bilateral symmetry), coelom development (diploblastic and triploblastic organisation in animals, acoelomate, pseudocoelomate, coelomate and haemocoelomate), segmentation. 

2. Structural Organisation in Animals and Plants

(i) Morphology of Flowering Plants 

(ii) Anatomy of Flowering Plants

(iii) Structural Organisation inAnimals: Frog

3. Cell: Structure and Function

(i) Cell - the Unit of Life Cell theory and cell as the basic unit of life: Structure of prokaryotic and eukaryotic cells; Plant cell and animal cell; cell envelope; cell membrane, cell wall; cell organelles – ultrastructure and function; endomembrane system, mitochondria, ribosomes, plastids, microbodies; cytoskeleton, cilia, flagella, centrioles; nucleus.

(ii) Biomolecules Proteins, carbohydrates, lipids, enzymes.

(iii) Cell Cycle and Cell Division Cell cycle, mitosis, meiosis and their significance.

4. Plant Physiology

(i) Photosynthesis in higher plants Photosynthesis as a mean of autotrophic nutrition; site of photosynthesis, pigments involved in photosynthesis (elementary idea); photochemical and biosynthetic phases of photosynthesis; cyclic and non-cyclic photophosphorylation; chemiosmotic hypothesis; photorespiration; C3 and C4 pathways; factors affecting photosynthesis

(ii) Respiration in Plants Exchange of gases; cellular respiration - glycolysis, fermentation (anaerobic), TCA cycle and electron transport system (aerobic); energy relations - number of ATP molecules generated; amphibolic pathways; respiratoryquotient.

(iii) Plant Growth and Development Seed germination; phases of plant growth; plant growth rate; differentiation, dedifferentiation and redifferentiation; sequence of developmental processes in a plant cell; growth regulators - auxin, gibberellin, cytokinin, ethylene, ABA.

5. Human Physiology

(i) Breathing and exchange of gases. 

Respiratory organs in animals (recall only); Respiratory system in humans; mechanism of breathing - exchange of gases, transport of gases and regulation of breathing, respiratory volumes; disorders related to respiration.

(ii) Body fluids and circulation. 

Composition of blood, blood groups, coagulation of blood; composition of lymph and its functions; human circulatory system - structure of human heart and blood vessels; cardiac cycle, cardiac output, ECG; double circulation; regulation of cardiac activity; disorders of circulatory system.

(iii)Excretory products and their elimination. 

Modes of excretion - ammonotelism, ureotelism, uricotelism; human excretory system - structure and function; urine formation, osmoregulation; regulation of kidney function, renin - angiotensin, atrial natriuretic factor, ADH; role of erythropoietin; role of other organs in excretion; disorders of the excretory system - uraemia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, kidney transplant.

(iv) Locomotion and Movement 

Types of movement - ciliary, flagellar, muscular; skeletal muscles - contractile proteins and muscle contraction; skeletal system and its functions; joints; disorders of muscular and skeletal system.

(v) Neural Control and Coordination 

Neuron and nerves; nervous system in humans - central nervous system; peripheral nervous system and visceral nervous system; generation and conduction of nerve impulse.

(vi) Chemical Co-ordination and Integration 

Endocrine glands and hormones; human endocrine system - hypothalamus, pituitary, pineal, thymus, thyroid, parathyroid, adrenal, GI tract, pancreas, gonads; mechanism of hormone action (elementary idea); role of hormones as messengers and regulators, hypo - and hyperactivity and related disorders; dwarfism, acromegaly, cretinism, goiter, exophthalmic goiter, diabetes mellitus and diabetes insipidus, Grave’s disease, Addison's disease.

1. Scientific Techniques 

To study parts of a dissecting microscope and compound microscope. 

2. Physiology

(i) Food tests: test for starch, glucose, sucrose, proteins and fats.

(ii) To study the effect of thawing, heat and alcohol on permeability of beet root cells.

3. Morphology  

(i) Morphology and modification of roots, stems and leaves. 

(ii) Preparation of temporary slides of Mucor / Rhizopus

4. Cytology

Preparation of temporary slides of -

(i) Onion peel (to study the plant cell)

(ii) Stages of mitosis in onion root tips.

(iii)T.S of monocot and dicot stem.

(iv) T.S. of monocot and dicot root.

5. Spotting: (Three minutes to be given for each spot which includes identification, drawing a labeled diagram and writing at least two characteristics).

(a) Identification of stained preparations of the

following:

(i) Stages of meiosis.

(ii) Identification of mammalian blood cells.

(iii) Bacteria

(iv) Spirogyra

(v) Amoeba

(vi) Yeast

(b) Identification of the following specimens -

(i) Liverworts

(ii) Moss

(iii) Fern

(iv) Pinus

(v) Mushroom

(vi) One monocot plant – bamboo

(vii) One dicot plant – Petunia

(viii) Sponge

(ix) Hydra

(x) Tape worm

(xi) Leech

(xii) Silk Worm

(xiii) Rohu fish

(c) Comment on experimental set up studied in physiology.

(a) Osmosis

(b) Transpiration

(c) Photosynthesis

(d) Transpiration pull.

Contents

Introduction

Presentation (graphs, tables, charts, newspaper cuttings, diagrams, photographs, statistical analysis if relevant)

Conclusion/ Summary

Bibliography

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