GASEOUS EXCHANGE. (a) Identify the organ and the parts labelled M, N, and P. (b) How the structures are labelled P adapted to their function?
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1 NAME SCHOOL INDEX NUMBER DATE Q11 P1 GASEOUS EXCHANGE The diagram below represents an organ from a bony fish. Study the diagram and answer the questions that follow Q14 P1 (a) Identify the organ and the parts labelled M, N, and P M N P. (b) How the structures are labelled P adapted to their function? What are the characteristics do gills of a fish and the mouth cavity of a frog have in common that enables them to be efficient in gaseous exchange? Q14 P1 1
2 (a) Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere (3 marks) (b) Name two structures used for gaseous exchange in plants Q4 P1 Why are gills in fish highly vascularised? Q5 P1 Suggest three reasons why green plants are included in a fish aquarium Q16 P1 Describe the: a) Process of inhalation in mammals. b) Mechanisms of opening and closing of stomata in plants. 2
3 Q11c P1 State two ways in which the leaf is suited to gaseous exchange Q10 P1 Name three sites where gaseous exchange takes place in terrestrial plants Q9 P1 Name two gaseous exchange structures in higher plants. 3
4 Q13 P1 The diagram below shows gaseous exchange in tissues. a) Name the gas that diffuses: i) To the body cells ii) From the body cells b) Which compound dissociates to release the gas named in (a) (i) above? c) i) What is tissue fluid? ii) What is the importance of tissue fluid? d) Name the blood vessel with the highest concentration of: i) Glucose ii) Carbon dioxide 4
5 Q3 P1 The diagram below represents a part of the rib cage. a) Name the parts labelled W, Y and Z. (3 marks) b) How does the part labelled Z facilitates breathing in? (3 marks) Q18 P1 Describe how gaseous exchange takes place in terrestrial plants. (20 marks) 5
6 Q5 P1 State two ways in which floating leaves of aquatic plants are adapted to gaseous exchange Q12 P1 (a)name two structures for gaseous exchange in aquatic plant (b)what is the effect of contraction of the diaphragm muscles during breathing in mammals? (3 marks) 6
7 Q1 P2 The diagram below represents some gaseous exchange structures in humans (a) Name the structures labeled K, L, and M (3 marks) K L M... (b) How is the structure labeled J suited to its function? (3 marks) (c) Name the process by which inhaled air moves from the structure labeled L into blood capillaries ( 1 mark) (d ) Give the scientific name of the organism that causes tuberculosis in humans Q8 P2 (1 mark). (a)state four characteristics of gaseous exchange surfaces (4 marks) 7
8 (b) Describe the mechanism of gaseous exchange in a mammal (16 marks) 8
9 Q16 P1 (a) Name the gaseous exchange surface in insects (1 mark) (b) How is the surface named in (a) above suited to its function Q19a P1 a) Apart from the lungs, name two gaseous exchange surfaces in a frog Q22 P1 State the difference in content of oxygen and carbon (IV) Oxide in the air that enters and leaves the human lungs Q3a, b P2 a) Name the causative agents for the following respiratory diseases. i) Whooping cough. ii) Pneumonia b) Describe how oxygen in the alveolus reaches the red blood cells (4 marks) 9
10 Q6 P1 The diagram below represents part of gaseous exchange system in human (a) Name the parts labelled F and G. (b) State one function of each of the parts labelled H and J Q5 P2 (a) Describe the process of inhalation. (4 marks) (b) Explain the mechanism of stomatal opening (4 marks) 10
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