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Level 1 Worksheet: Life Processes

Class: 10 Science Topic: Nutrition, Respiration & Transport Max. Questions: 45
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Section A: Nutrition & Digestion
  1. Define Photosynthesis. Write the balanced chemical equation for it.
  2. What is the role of Acid (HCl) in our stomach? (Give 2 points).
  3. What are Villi? What is their function and where are they located?
  4. What is the function of Bile Juice? Does it contain any enzyme?
  5. Differentiate between Autotrophic and Heterotrophic nutrition.
  6. How does Amoeba obtain its nutrition? Explain with a simple flow.
  7. What is the role of Saliva in the digestion of food?
  8. Name the final products of digestion of Carbohydrates, Proteins, and Fats.
  9. How do guard cells regulate the opening and closing of stomatal pores?
  10. Why is the small intestine longer in herbivores than in carnivores?
Section B: Respiration
  1. Differentiate between Aerobic and Anaerobic respiration. (End products and Energy).
  2. Write the pathway of breakdown of glucose in:
    (a) Presence of Oxygen (Mitochondria)
    (b) Lack of Oxygen (Muscle Cells)
    (c) Absence of Oxygen (Yeast)
  3. Why do we get muscle cramps after heavy exercise?
  4. What is the role of rings of cartilage in the trachea?
  5. How are alveoli designed to maximize the exchange of gases?
  6. Why acts the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
  7. What is the function of Haemoglobin in our body?
  8. Name the three carbon molecule formed during respiration. (Pyruvate).
  9. Where does the first step of the breakdown of glucose (Glycolysis) take place?
Section C: Transportation & Excretion
  1. Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds?
  2. Write two differences between Arteries and Veins.
  3. What is Double Circulation? Why is it efficient?
  4. What are the components of the transport system in human beings? What are the functions of these components?
  5. What is the role of Transpiration in plants? (Ascent of SAP + Cooling).
  6. Differentiate between Xylem and Phloem (Direction of flow & Material).
  7. Describe the structure and functioning of a Nephron. (Briefly).
  8. What are the methods used by plants to get rid of excretory products?
  9. How is the amount of urine produced regulated?
  10. What is the role of Platelets in the blood? What happens if they are absent?
  11. What is Lymph? State its function.