Contents

Internal Assessment

Writing lab reports

Practical Investigations

1. Examination of animal and plant cells using the light microscope…………….……2

2. Microscopic Examination of organisms in pond water………………………….…3

3. Examination of electron micrographs of different cells and tissues……………..….4

4. Testing different organic compounds. ……………...……….………...…..……….5

5. Distribution of organic compounds in plant tissues……………...……………......7

6. Glucose concentration in solution……………...…………………………………..8

7. Effect of substrate concentration on rate of enzyme catalyzed reactions………....9

8. Pectinase……………...………………...……………….…………………...……11

9. Making yogurt…………………...…………………...………………….………..12

9. Effect of surface area and volume on the rate of diffusion……………...…...……13

10. Effect of light intensity on rate of photosynthesis……………...…………....…14

11. Comparing the number of stomata. ……………...………………….....…..……15

12. Measuring the rate of transpiration……........…………………...………………16

13. Determination of the salt concentration of plant epidermal cells……………......17

14. Fermentation in yeast in different sugar solutions……………...…….……........18

15. Measuring respiration rate in small organisms……………...…………………...20

16. Oxygen consumption in humans……………...……………...…………………21

17. Examination of mammalian lungs……………...………………...………...……..22

18. Structure and function of mammalian heart……………...……………......…..…23

19. Microscopic examination of cardiac muscle……………...………………..…….24

20. Structure and properties of blood vessels……………...………………………..25

21. Microscopic examination of arteries, veins and capillaries…………...…...……..26

22. Study of the frog's heart………………………...…………......……......…...…..27

23. Examination of mammalian kidney……………...…………………….....………28

24. Testing your blood group……………...…………………...……………....……29

25. Sensitivity of the human skin………...…………………...…………….…...…..30

26. Anatomy of the mammalian eye………...…………………...……………......…32

27. Microscopy of the digestive tract………...…………………...………….......…34

28. Separation of chlorophyll pigments………...…………………...……………....35

29. Structure of the leaf………...…………………...…………………..…………...36

30. Microscopy of the liver and the skin………...…………………...……...……...37

31. Effect of antibiotics on bacteria………...…………………...…………….....…..38

32. Microscopy of the nervous tissue………...…………………...…………….…..39

33. Cell Division: Mitosis………...…………………….…………...………………40

34. Cell Division: Meiosis……...………………………………...………………….41

35. Microscopic structure of mammalian testis and ovary……....………………….42

36. Reproduction in Angiosperms: Flower structure……...………………….…..…43

37. Dispersal of fruits and seeds……...………………………………...….………..44

38. Life Cycle of Mosses……...………………………………...………….……….45

39. Life cycle of ferns……...………………………………...…………..…….……46

40. Life Cycle of a fungus: The Bread Mold Rhyzopus stolonifer……...…..………47

41. Genetics: Handling Drosophila……...……………………………….......………48

42. Genetics: Monohybrid inheritance in Drosophila……...…………………....…..49

43. DNA Extraction……...…………………………...…………………..……...…..50

44. Effect of inhibition on enzyme activity……...………………………..…...…….51

45. Immunological method of testing food composition……...…………..…………52

Seashore and desert ecology

1. Design an investigation to compare the distribution of a plant species….…….…54

2. Measurement of some abiotic factors in the two areas of the desert…….….……54

3. Adaptation to desert life…………….……………….……….……………..….…55

4. Design an investigation to compare the population of periwinkle in two areas ….55

5. Monitoring environmental change. .……………….……..….……….......…….…55

6. Identify and classify 5 aquatic organisms. .……………….……………..…….…55

7. Observe and study interactions in communities on the seashore. .…………….…55

8. Study the niche of one population, e.g. Limpets. .………………...…………...…55

9. Construct a food chain or web from your observations and on the seashore. ....…55

10. Study succession in miniature on two rocks of different sizes. .…………......…55

11. Study the adaptations of different organisms to shore life. .……………..…...…55

12. Microscopic studies: Take water samples from two areas rich in algae. .…….…55

13. Observation of fertilization in Sea Urchins. .………………..………………..…56

14. Behavior in Periwinkles: Light.…….………………………………....………….57

15. Behavior in Periwinkles: Salinity. .…………………………………………....…57

16. Osmoregulation and behavior in the shore crab.……………………...……….…58

Planning experiments on verious topics .……………………...............……...…59