CBSE Class 11 Biology Syllabus 2020-2021

Biology is an important subject for the science stream students of Class 11. To score well in this subject the syllabus of Class 11 Biology plays an important role as the final question paper of the subject is prepared according to the syllabus. Along with the complete course structure, the syllabus also provides information about the distribution of marks for each topic and subtopics and time duration for each topic. CBSE syllabus for Class 11 Biology for the academic year 2020-2021 also includes practical syllabus, assignments and projects information.

Download Revised CBSE Class 11 Biology Syllabus 2020-2021 PDF

CBSE Board Class 11 Biology latest syllabus for students to download for the academic year 2020-2021

Unit-wise CBSE Syllabus for Class 11 Biology with Marking Scheme 2020-21

Unit Title Marks
I Diversity of Living Organisms 15
II Structural Organisation in Plants and Animals 08
III Cell: Structure and Function 15
IV Plant Physiology 15
V Human Physiology 17
Total 70

Students can also have a look at syllabus of all the subjects by visiting CBSE Class 11 Syllabus page at BYJU’S.

Find also the deleted portion of the Biology syllabus 2020-21 from the link below:

CBSE Class 11 Biology Deleted Portion of the Syllabus 2020-21

CBSE Class 11 Biology Practical Syllabus with Marks Weightage

Evaluation Scheme Marks
One Major Experiment Part A (Experiment No- 1,3) 5
One Minor Experiment Part A (Experiment No- 4,5, 6) 4
Slide Preparation Part A (Experiment No- 2) 5
Spotting Part B 7
Practical Record + Viva Voce Credit to the students’ work over the academic session may be given 4
Project Record + Viva Voce 5
Total 30 Marks

CBSE Class 11 Biology Practicals

A: List of Experiments

1. Study and describe a locally available common flowering plant, from any one family: Solanaceae or Liliaceae (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).

2. Study of distribution of stomata in the upper and lower surfaces of leaves.

3. Separation of plant pigments through paper chromatography.

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

5. Test for presence of sugar in urine.

6. Test for presence of albumin in urine.

B. Study/Observer of the following (spotting)

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, liverfluke, Ascaris, leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.

4. Tissues and diversity in shape and size of animal cells (squamous epithelium, smooth, skeletal and cardiac muscle fibers and mammalian blood smear) through temporary/permanent slides.

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

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