Practicals

60 Periods

A. List of Experiments

1. Study pollen germination on a slide.

2. Collect and study soil from at least two different sites and study them for texture, moisture

content, pH and water holding capacity of soil. Correlate with the kinds of plants found in

them.

3. Collect water from two different water bodies around you and study them for pH, clarity

and presence of any living organisms.

4. Study the presence of suspended particulate matter in air at the two widely different sites.

5. Study of plant population density by quadrate method.

6. Study of plant population frequency by quadrate 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.

Study/observation of the following (Spotting)

1. Flowers adapted to pollination by different agencies (wind, insect).

2. Pollen germination on stigma through a permanent slide.

3. Identification of stages of gamete development i.e. T.S. testis and T.S. ovary through

permanent slides (from any mammal).

1104. Meiosis in onion bud cell or grass hopper testis through permanent slides.

5. T.S. of blastula through permanent slides.

6. Mendelian inheritance using seeds of different colour/sizes of any plant.

7. 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. Identification of common disease causing organisms like Ascaris, Entamoeba, Plasmodium,

ringworm through permanent slides or specimens. Comment on symptoms of disease that

they cause.

10. Two plants and two animals found in xerophytic conditions. Comment upon their

morphological adaptations.

11. Plants and animals found in aquatic conditions. Comment upon their morphological

adaptations.