Q1: What do you mean by residual volume of air? What is its function?
Q2:.Why is diffusion insufficient to meet the oxygen requirement of the body?
Q3: Explain the events of photosynthesis.
Q4: Give schematic figure showing break down of glucose by various pathways.
Q5: Why is breathing rate much faster in aquatic organism than others?
Q6: Differentiate artery and vein with respect to
ii. Direction of blood flow.
Q7: Why are capillaries thin walled?
Q8: The wall of ventricle is thicker than atrium. Why?
Q9:. Write the functions of Valve of heart.
Q10: Why do plants need low energy than animals?
Q11: Name the process of movement of ions into the root cells.
Q12: How does water rise in tall trees?
Q13: Which process transports soluble products of Photosynthesis?
Q14: In which form photosynthetic is transported in phloem tissue?
Q15: Explain the mechanism of transport of photosynthate?
Q16: Define excretion?
Q16: Name two main constituent of urine.
Q17: Describe the mechanism of urine formation.
Q18: Name three causes that reduce the activity of kidney.
Q19: What are the various ways of excretion by plant?
Q20: Draw the labeled diagram of:
i. Main organs of excretion in human.
ii. Main organs of respiration.
iii. Digestive system.
iv. Human heart.
v. Nutrition in Amoeba.