Chapter 16 question bank structured questions

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Chapter 16Question bankStructured questions|!|BCELB0160000011|!|Adam was having dinner with his family in the bright dining room. His mother askedhim to go to the kitchen to take an apple. The kitchen was dimly lit.(a)Describe how his eyes adjusted to the dim kitchen light?(3 marks)(b)Adam switched on the light in the kitchen to look for an apple. Three apples wereplaced on a table in the kitchen. The diagram below shows a section of Adam’s eyeand the light rays from the three apples.apple 1apple 2apple 3(i)Which of the three apples would be perceived most clearly? Explain youranswer.(3 marks)© 2019Aristo Educational Press Ltd.26
HKDSE BIOLOGY: Connecting ConceptsChapter 16Question bankStructured questions(ii)When Adam’s eye kept focusing in the direction of apple 2, he could see apple1 but could not detect its colour. Give an explanation for this.(3 marks)##
________(9 marks)##Skills assessedMarks(a)Understanding basic concepts3(b)(i)Analysing data3(b)(ii)Analysing data3|!|BCELA0160000012|!|Cross topic(a)The iris of the eye contains antagonistic muscles which control the size of thepupil.(i)Use your knowledge of the muscles of the iris to explain the action ofantagonistic muscles.(3 marks)© 2019Aristo Educational Press Ltd.27
HKDSE BIOLOGY: Connecting ConceptsChapter 16Question bankStructured questions(ii)The pupil response to light intensity is a reflex action coordinated by thebrain. Draw a flowchart to show the nervous pathway involved.(3 marks)(b)When focusing on objects at different distances, the curvature of the lens in the eyechanges. The graph below shows the maximum curvature of the lens in people ofdifferent ages.Using the information from the graph to explain how the ability of the lens tochange its curvature affects the ability to focus clearly as people get older.101Age (year)Maximum curvature of thelens (arbitrary units)20304050607023456(3 marks)© 2019Aristo Educational Press Ltd.28
HKDSE BIOLOGY: Connecting ConceptsChapter 16Question bankStructured questions© 2019Aristo Educational Press Ltd.29
HKDSE BIOLOGY: Connecting ConceptsChapter 16Question bankStructured questions##(a)(i)Antagonistic muscles work in pair to bring about opposing actions.(1)The circular muscles of the iris contract and the radial muscles relax to reducethe size of the pupil.(1)The radial muscles of the iris contract and the circular muscles relax toincrease the size of the pupil.(1)(ii)photoreceptorssensory neurone / optic nerveinterneurone in the brainmotor neurone / nerveiris muscle(3)(b)As people get older, the lens becomes less elastic.(1)

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