CBSE Class 11 Biology Syllabus 2024-25

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Latest CBSE 2024-25 Biology Syllabus for Class 11

Earlier there used to be 22 chapters in CBSE Class 11 Biology which are now reduced to 19. This means, three chapters have been completely removed from the CBSE Biology Class 11 syllabus. On this page, you can find direct PDF download links to the latest Class 11 Biology Syllabus for the 2024-25 academic session. We have also added a simple analysis of all the deleted and added topics according to the latest syllabus.

2024-25 Class 11 Biology Syllabus

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2023-24 Class 11 Biology Syllabus

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(for reference purposes only)

Units Unit Names Marks
I Diversity of Living Organisms 15
II Structural Organisation in Plants and Animals 10
III Cell: Structure and Function 15
IV Plant Physiology 12
V Human Physiology 18
Major Experiment (05) + Minor Experiment (04) + Slide Preparation Part A (05) + Spotting* (07) + Practical Record + Viva Voce (04) + Project Record + Viva Voce (05)

*(Credit to the student’s work over the academic session may be given)


1. Study and describe locally available common flowering plants, from family Solanaceae (Poaceae, Asteraceae or Brassicaceae can be substituted in case of particular geographical location) including dissection and display of floral whorls, anther and ovary to show number of chambers (floral formulae and floral diagrams), type of root (tap and adventitious); type of stem (herbaceous and woody); leaf (arrangement, shape, venation, simple and compound).

2. Preparation and study of T.S. of dicot and monocot roots and stems (primary).

3. Study of osmosis by potato osmometer.

4. Study of plasmolysis in epidermal peels (e.g. Rhoeo/lily leaves or fleshy scale leaves of onion bulb).

5. Study of distribution of stomata on the upper and lower surfaces of leaves.

6. Comparative study of the rates of transpiration in the upper and lower surfaces of leaves.

7. Test for the presence of sugar, starch, proteins and fats in suitable plant and animal materials.

8. Separation of plant pigments through paper chromatography.

9. Study of the rate of respiration in flower buds/leaf tissue and germinating seeds.

10. Test for presence of urea in urine.

11. Test for presence of sugar in urine.

12. Test for presence of albumin in urine.

13. Test for presence of bile salts in urine.


1. Parts of a compound microscope.

2. Specimens/slides/models and identification with reasons - Bacteria, Oscillatoria, Spirogyra, Rhizopus, mushroom, yeast, liverwort, moss, fern, pine, one monocotyledonous plant, one dicotyledonous plant and one lichen.

3. Virtual specimens/slides/models and identifying features of - Amoeba, Hydra, liver fluke, Ascaris, leech, earthworm, prawn, silkworm, honey bee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.

4. Mitosis in onion root tip cells and animal cells (grasshopper) from permanent slides.

5. Different types of inflorescence (cymose and racemose).

6. Human skeleton and different types of joints with the help of virtual images/models only.


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