CBSE Board Class 12 Practicals 2024 2025 Subject Biology | CBSE NCERT Class 12 Biology Practical
CBSE Biology Practicals 2024 – 25 Class 12 CBSE School’s Projects and Solution by Expert Teacher. CBSE Board Class 12 Practical Topics and Solution, Diagrams, Observation.
CBSE Biology Practicals for Class 12 Biology
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 observer 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 funguscausing 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.