A. List of  Experiments

1.    Disect the given flower and display different whorls. Disect anther and ovary to show number of chambers.
2.    Study pollen germination on a slide.
3.    Collect and study soil from at least two different sites and study these for texture, moisture content, pH and water holding capacity of soil. Correlate with the kinds of plants found in them.
4.    Collect water from different water bodies around you and study the samples for  pH, clarity and presence of any living organisms.
5.    Study the presence of suspended particulate matter in air at the two widely different sites.
6.    Study of plant population density and frequency by quadrat method.
7.    Prepare a temporary mount of onion root tip to study mitosis.
8.    To study the effect of the different temperatures and three different pH on the activity of salivary amylase on starch.
9.    Isolation of DNA from available plant material such as spinach, green pea seeds, papaya, etc

B. Study/Observation of the following (Spotting)

1.    Study of flowers adapted to pollination by different agencies (wind., insect, birds)
2.    Study of pollen germination on stigma through a permanent slide.
3.    Study and identify stages of gamete development i.e T.S. testis and T.S. ovary through permanent slides. (from any mammal)
4.    Study meiosis in onion bud cell or grasshopper testis through permanent slide.
5.    Study of T.S. of blastula through permanent slide.
6.    Study Mendelian inheritance using seeds of different colours/sizes of any plant.
7.    Study prepared pedigree charts of genetic traits such as rolling of tongue, blood groups, widow’s peak, colour blindness.
8.    Exercise on controlled pollination-Emasculation, tagging and bagging.
9.    To identify common diseases causing organisms like Ascaris, Entamoeba, Plasmodium, Ringworm through permanent slides or specimens. Comment on symptoms of diseases that they cause.
10.    Study two plants and animals found in xerophytic conditions. Comment upon their adaptations/morphological features.
11.    Study plants and animals in aquatic conditions. Comment upon their adaptations/morphological features.


Product Description


1.    Read from the practical notebook the full description of the experiment to be done before going to the laboratory.
2.    Take the practical notebook auxillary notebook and a dissection box along with while going to the laboratory.
3.    Collect the required apparatus before starting the experiment.
4.    Follow carefully the given instructions and precautions while performing the experiment.
5.    Do not remove anything of your fellow student without his permission.
6.    Note down in your practical notebook the concerned observations, etc., while performing the experiment.
7.    Write date, experiment number, (name of) the experiment (to be performed), apparatus, theory, procedure and precautions on the right hand side page of the open practical notebook and experiment (to be performed), equations (if any), (draw) diagrams, observations, inferences, calculations (if any) and conclusion on the left hand side of the page.
8.    Procedure, experimental part and observations should be written in singular first person in past indefinite tense but omitting the word ‘I’.
9.    After performing the experiment, complete the notebook and get it signed by your teacher.
10.    Always keep your notebook neat and clean.
11.    While drawing the diagrams, the rubber should be used to the minimum and diagrams should be labelled.
12.    Do not cook the observations to get accurate result.
13.    Do not taste anything in the laboratory without the express permission of your teacher.
14.    When anything gets broken, then bring it to the notice of your teacher there and then.
15.    Perform the experiment calmly and with confidence.
16.    After completing the experiment, clean the apparatus, place it at its proper place and clean the working table.