CBSE Biology Practical Syllabus for Class 12 2024: Download PDF

CBSE Class 12 Biology Practical Syllabus 2024: The Biology curriculum for the students of class 12th under the Central Board of Secondary Education can be further divided into two, theory and practicals. On one hand, the theory paper is of 70 marks and on the other hand, the Biology practical paper is of 30 marks. The practical curriculum includes a major and a minor experiment each, spotting, slide preparation, investigatory project, viva voce, etc. For the practicals, a total of 60 periods are to be spent, as prescribed by the CBSE board. The curriculum is designed to facilitate candidates’ understanding and application of both scientific principles and basic concepts. In this article, CBSE 12th students can check the complete CBSE Class 12 Biology Practical syllabus 2023-24. 

CBSE Class 12 Biology Practical 2023-24 Syllabus

A List of Experiments 

1. Prepare a temporary mount to observe pollen germination. 
2. Study the plant population density by quadrat method. 
3. Study the plant population frequency by quadrat method. 
4. Prepare a temporary mount of onion root tip to study mitosis. 
5. Isolate DNA from available plant material such as spinach, green pea seeds, papaya, etc.

B. Study and Observe the following (Spotting): 

1. Flowers adapted to pollination by different agencies (wind, insects, birds). 
2. Pollen germination on stigma through a permanent slide or scanning electron micrograph.
3. Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through permanent slides (from grasshopper/mice). 
4. Meiosis in onion bud cell or grasshopper testis through permanent slides. 
5. T.S. of blastula through permanent slides (Mammalian). 
6. Mendelian inheritance using seeds of different colour/sizes of any plant. 
7. Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups, ear lobes, widow’s peak and colour blindness. 
8. Controlled pollination – emasculation, tagging andbagging. 
9. Common disease causing organisms like Ascaris, Entamoeba, Plasmodium, any fungus causing ringworm through permanent slides, models or virtual images or specimens. Comment on symptoms of diseases that they cause. 

10. Models specimen showing symbolic association in root modules of leguminous plants, Cuscuta on host, lichens. 

11. Flash cards models showing examples of homologous and analogous organs.

SECTION–B

List of Experiments 

1. To find the value of v for different values of u in case of a concave mirror and to find the focal length. 
2. To find the focal length of a convex mirror, using a convex lens. 
3. To find the focal length of a convex lens by plotting graphs between u and v or between 1/u and 1/v. 
4. To find the focal length of a concave lens, using a convex lens. 
5. To determine angle of minimum deviation for a given prism by plotting a graph between angle of incidence and angle of deviation. 
6. To determine refractive index of a glass slab using a travelling microscope. 
7. To find the refractive index of a liquid using convex lens and plane mirror. 
8. To find the refractive index of a liquid using a concave mirror and a plane mirror. 
9. To draw the I-V characteristic curve for a p-n junction diode in forward and reverse bias.

List of Activities 

1. To identify a diode, an LED, a resistor and a capacitor from a mixed collection of such items. 

2. Use of multimeter to see the unidirectional flow of current in case of a diode and an LED and check whether a given electronic component (e.g., diode) is in working order. 
3. To study effect of intensity of light (by varying distance of the source) on an LDR. 
4. To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab. 
5. To observe diffraction of light due to a thin slit. 
6. To study the nature and size of the image formed by a (i) convex lens, or (ii) concave mirror, on a screen by using a candle and a screen (for different distances of the candle from the lens/mirror). 
7. To obtain a lens combination with the specified focal length by using two lenses from the given set of lenses. 

Suggested Investigatory Projects 

1. To study various factors on which the internal resistance/EMF of a cell depends. 
2. To study the variations in current flowing in a circuit containing an LDR because of a variation in (a) the power of the incandescent lamp, used to ‘illuminate’ the LDR (keeping all the lamps at a fixed distance). (b) the distance of a incandescent lamp (of fixed power) used to ‘illuminate’ the LDR. 
3. To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, an equiconvex lens (made from a glass of known refractive index) and an adjustable object needle. 
4. To investigate the relation between the ratio of (i) output and input voltage and (ii) number of turns in the secondary coil and primary coil of a self-designed transformer. 
5. To investigate the dependence of the angle of deviation on the angle of incidence using a hollow prism filled one by one, with different transparent fluids. 
6. To estimate the charge induced on each one of the two identical Styrofoam (or pith) balls suspended in a vertical plane by making use of Coulomb’s law. 
7. To study the factor on which the self-inductance of a coil depends by observing the effect of this coil, when put in series with a resistor/(bulb) in a circuit fed up by an A.C. source of adjustable frequency. 
8. To study the earth’s magnetic field using a compass needle -bar magnet by plotting magnetic field lines and tangent galvanometer.

CBSE Class 12 Biology Practical Syllabus 2023-24 PDF Download

Prescribed Books for CBSE Biology Practical Class 12: 

1. Biology, Class-XII, Published by NCERT 
2. Other related books and manuals brought out by NCERT (consider multimedia also) 
3. Biology Supplementary Material (Revised). Available on the CBSE website.

CBSE Class 12 Biology Practical 2023-24 Evaluation Scheme

Max Marks: 30

Time: 3 hours

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CBSE Class 12 Syllabus (All Subjects)