Life processes Worksheets

Life Processes Worksheet-16

1. Why are the walls of ventricles thicker than the auricles?

2. What is the structural difference between the auricles and ventricles?

3. What consequences will occur if there is no tubular reabsorption in the nephrons of kidneys?

4. What is the main function of lymphocytes?

5. What is the difference between bicuspid and tricuspid valves?

6. What is the difference between plasma and serum?

Life Processes Worksheet-17

31. How are fats digested in our bodies? Where does this process take place?

32. What is the role of saliva in the digestion of food?

33. How are the alveoli designed to maximise the exchange of gases?

34. What are the differences between the transport of materials in xylem and phloem?

35. Draw the diagram of a palisade cell of a plant leaf and label the following in it :

(i) Chloroplast      (ii) Vacuole   (iii) Cytoplasm       (iv) Nucleus

Life Processes Worksheet-18

61. Describe the mechanism of blood clotting.

62. Draw a diagram of the front view of human heart and label any six parts including at least two, that are concerned with arterial blood supply to the heart muscles.

63. Differentiate between photosynthesis and respiration.

64. How does intestinal juice contribute to the digestion of proteins? What provides an alkaline pH in the small intestine?

65. Name any three enzymes secreted by pancreas. Specify the substrate and the product of each.