Irritability and Response · CSEC Biology

89 past-paper questions on Irritability and Response, part of Life Processes and Disease, from every CSEC Biology paper on Quelpr.

1. 1(a)4 marks· Biology Q1 1(a)In the space provided, produce a diagram to show how the apparatus in Figure 1 could have been set up for this investigation.
2. 1(b)(i)2 marks· Biology Q1 1(b)(i)Complete Table 1 by calculating the total and percentage of larvae on the dark side and the light side of the petri dish. Write your answer in Table 1.
3. 1(b)(i)1 mark· Biology Q1 1(b)(i)What type of movement is shown by the plants in Figure 2?
4. 1(b)(ii)2 marks· Biology Q1 1(b)(ii)Do the results of this investigation support the student's hypothesis? Give a reason for your answer.
5. 1(b)(ii)2 marks· Biology Q1 1(b)(ii)State a hypothesis that the students could test by using the apparatus and materials shown in Figure 2.
6. 1(b)(iii)1 mark· Biology Q1 1(b)(iii)The students want the seedlings to grow straight towards the ceiling. Suggest how they could manipulate the apparatus to get this result.
7. 1(b)(iv)2 marks· Biology Q1 1(b)(iv)Describe how the apparatus shown in (a) could be modified to investigate ONE of the factors named in (b) (iii).
8. 1(b)(v)2 marks· Biology Q1 1(b)(v)Explain how the response shown by the larvae in this experiment could help them to survive in their natural environment.
9. 1(c)(i)2 marks· Biology Q1 1(c)(i)How does the response shown in Figure 2 benefit the plant?
10. 1(d)(i)2 marks· Biology Q1 1(d)(i)Why is this an important step in the investigation?
11. 1(d)(ii)2 marks· Biology Q1 1(d)(ii)Explain why the response to gravity is essential for plant survival.
12. 1(f)(i)2 marks· Biology Q1 1(f)(i)Explain the appearance of the seedlings in Figure 1c.
13. 1(f)(ii)1 mark· Biology Q1 1(f)(ii)If you are asked to set up an investigation in a laboratory to show that your explanation in (f)(i) is correct and all you have is an old shoe box, how would you prepare the box for the investigation?
14. 1(g)(i)2 marks· Biology Q1 1(g)(i)Describe an experiment to demonstrate the response of plants exposed to light on one side only.
15. 1(g)(ii)1 mark· Biology Q1 1(g)(ii)How does this response to light benefit plants in a forest?
16. 1(g)(iii)3 marks· Biology Q1 1(g)(iii)Explain how and why the response of invertebrates (like earthworms) to light differs from that shown by plants.
17. 2(a)4 marks· Biology Q2 2(a)On Figure 2, write the name of the part and use a label line to identify EACH of the following parts of the eye: (i) The light sensitive layer (ii) The jelly-like substance that keeps the eye in shape (iii) Carries…
18. 2(a)6 marks· Biology Q2 2(a)Label the parts numbered 1 to 6 on the diagram in Figure 2.
19. 2(a)(i)3 marks· Biology Q2 2(a)(i)Label Figure 3 to show the position of THREE glands that produce hormones involved in growth and development in humans.
20. 2(a)(ii)6 marks· Biology Q2 2(a)(ii)Complete the table below to identify and give the role of the hormones of growth and development produced by the glands you located in (a)(i).
21. 2(b)1 mark· Biology Q2 2(b)The rods and cones are specialised cells of the retina which are stimulated by light. What biological term describes such cells?
22. 2(b)(i)2 marks· Biology Q2 2(b)(i)Name the stimulus for EACH set of seedlings. Seedlings in A Seedlings in B
23. 2(b)(i)a)1 mark· Biology Q2 2(b)(i)a)Identify ONE other type of gland in the human body.
24. 2(b)(i)b)1 mark· Biology Q2 2(b)(i)b)Give ONE example of the type of gland you identified in (b)(i)a) above.
25. 2(b)(ii)1 mark· Biology Q2 2(b)(ii)Name the hormone responsible for the response of the cucumber seedlings in B.
26. 2(b)(ii)2 marks· Biology Q2 2(b)(ii)Give ONE similarity and ONE difference between endocrine glands and the type of gland identified in (b)(i).
27. 2(b)(iii)2 marks· Biology Q2 2(b)(iii)Suggest how the types of movement described in A and B may be useful to the seedlings.
28. 2(c)2 marks· Biology Q2 2(c)Severe lack of Vitamin A can result in the cornea of the eye becoming dry and thickened. Explain how this condition would affect a person's ability to see.
29. 2(c)4 marks· Biology Q2 2(c)Describe ONE similarity and ONE difference between the response of soil invertebrates and the response of the cucumber seedlings in B. Similarity Difference
30. 2(c)(ii)2 marks· Biology Q2 2(c)(ii)The line diagram below summarizes the role of the pancreatic hormones in the control of blood glucose levels. Complete the diagram by filling in the boxes with the names of Hormones X and Y.
31. 2(d)2 marks· Biology Q2 2(d)Explain the role of the liver in the homeostatic control of blood glucose levels.
32. 2(d)2 marks· Biology Q2 2(d)Outline TWO ways in which the nervous system functions differently from the endocrine system in humans.
33. 2(d)(i)4 marks· Biology Q2 2(d)(i)Identify the eye defects and the lenses in Figure 3 that can be used to correct the defects. Diagram C Eye defect: Corrective lens: Diagram D Eye defect: Corrective lens:
34. 2(d)(i)2 marks· Biology Q2 2(d)(i)Identify TWO physical factors that can cause an earthworm to move deeper into its burrow.
35. 2(d)(ii)2 marks· Biology Q2 2(d)(ii)Sometimes contact lenses are used to correct eye defects. Suggest TWO precautions one should take when using contact lenses.
36. 2(d)(ii)2 marks· Biology Q2 2(d)(ii)Explain why moving deeper into its burrow is important to the earthworm.
37. 2(e)(ii)1 mark· Biology Q2 2(e)(ii)Based on the data in Figure 1, suggest the range for blood glucose concentration in a healthy person.
38. 3(a)6 marks· Biology Q3 3(a)Complete the table by matching EACH labelled part of the eye to its function. Write the letter and the name of the part.
39. 3(a)(i)1 mark· Biology Q3 3(a)(i)Use a label line in Figure 2 to illustrate the position of the Adrenals endocrine gland.
40. 3(a)(i)2 marks· Biology Q3 3(a)(i)Identify the stimulus for EACH pupil in Figure 5.
41. 3(a)(i)1 mark· Biology Q3 3(a)(i)Define EACH of the following terms: Stimulus.
42. 3(a)(i)3 marks· Biology Q3 3(a)(i)Describe the process by which the structure of the boy's eye will allow him to read the book.
43. 3(a)(ii)3 marks· Biology Q3 3(a)(ii)Describe the process by which the structure of the boy's eye will allow him to observe his friends playing in the distance.
44. 3(a)(ii)1 mark· Biology Q3 3(a)(ii)Use a label line in Figure 2 to illustrate the position of the Thyroid gland endocrine gland.
45. 3(a)(ii)1 mark· Biology Q3 3(a)(ii)Define EACH of the following terms: Receptor.
46. 3(a)(ii)3 marks· Biology Q3 3(a)(ii)For Pupil II in Figure 5, describe how the response came about.
47. 3(a)(iii)1 mark· Biology Q3 3(a)(iii)Define EACH of the following terms: Effector.
48. 3(a)(iii)2 marks· Biology Q3 3(a)(iii)How are the responses illustrated by the pupils in Figure 5 important to humans?
49. 3(a)(iii)1 mark· Biology Q3 3(a)(iii)Use a label line in Figure 2 to illustrate the position of The pituitary gland endocrine gland.
50. 3(b)1 mark· Biology Q3 3(b)Name ONE type of light sensitive cell found in the retina.
51. 3(b)(i)1 mark· Biology Q3 3(b)(i)Name the type of corrective lens which would help the boy see distant objects clearly if he is nearsighted.
52. 3(b)(i)4 marks· Biology Q3 3(b)(i)Name TWO hormones produced by the pituitary gland and state the role of EACH.
53. 3(b)(i)2 marks· Biology Q3 3(b)(i)Using arrows, show on Figure 6 where an image that is viewed by this person would normally fall in relation to the retina.
54. 3(b)(i)4 marks· Biology Q3 3(b)(i)Label EACH of the following parts of the eye on Figure 1: Pupil, Ciliary muscles, Retina, Optic nerve.
55. 3(b)(ii)2 marks· Biology Q3 3(b)(ii)John is nearsighted but his sister Mary has normal vision. What would cause John's sight to be different from Mary's?
56. 3(b)(ii)1 mark· Biology Q3 3(b)(ii)Why is X called the 'blind spot'?
57. 3(b)(ii)2 marks· Biology Q3 3(b)(ii)Suggest TWO effects of a poorly developed pituitary gland in humans.
58. 3(b)(ii)2 marks· Biology Q3 3(b)(ii)Innovations in treating eye defects include lens replacement. On the diagram below, draw the lens that is likely to correct the defect shown in Figure 6, if lens replacement is done.
59. 3(b)(iii)2 marks· Biology Q3 3(b)(iii)Name the addictive component in cigarettes and suggest ONE negative impact of drug addiction.
60. 3(b)(iii)2 marks· Biology Q3 3(b)(iii)How would wearing corrective lenses/glasses allow John to see objects as clearly as Mary?
61. 3(c)2 marks· Biology Q3 3(c)Explain why colours are seen less clearly in dim light than in bright light.
62. 3(c)4 marks· Biology Q3 3(c)Explain why the appearance of the boy's eyes while seated under the shade of the tree would be different if he is seated in the sun.
63. 3(c)4 marks· Biology Q3 3(c)Although plants have no specialized organs of sensitivity such as the eye, they also respond to external stimuli. Explain TWO ways in which the response in plants is different from the response to external stimuli by…
64. 3(c)3 marks· Biology Q3 3(c)A boy looks up from reading his book to see a helicopter flying in the distance. Account for the changes that would occur in the lens of both of his eyes to enable him to see the helicopter.
65. 3(c)(i)a)1 mark· Biology Q3 3(c)(i)a)Figure 3A shows a shoot growing in sunlight. Complete Figure 3B to show the response of the shoot to light coming from only one direction.
66. 3(c)(i)b)1 mark· Biology Q3 3(c)(i)b)Complete Figure 3B to show the distribution of the hormone responsible for the response shown in your drawing in B.
67. 3(c)(ii)2 marks· Biology Q3 3(c)(ii)Explain how the hormone causes the response shown in Figure 3B.
68. 3(c)(iii)2 marks· Biology Q3 3(c)(iii)Suggest why this response to light is important to the survival of the plant.
69. 3(d)3 marks· Biology Q3 3(d)Which of the eyes in Figure 2, A or B, shows the appearance of an eye exposed to dim light? Explain your answer.
70. 3(e)1 mark· Biology Q3 3(e)Why is it important for the eye to respond when exposed to very bright light?
71. 4(a)6 marks· Biology Q4 4(a)With the aid of a diagram of a reflex arc, describe the response of an individual whose skin suddenly comes into contact with a hot surface.
72. 4(a)(i)4 marks· Biology Q4 4(a)(i)Explain how structures in the human eye control the amount of light that enters the eye.
73. 4(a)(ii)5 marks· Biology Q4 4(a)(ii)Jenny enters a dimly lit room and cannot see the colours of the furniture until the lights are switched on. Explain how Jenny is able to discern objects in the dimly lit room but cannot see the colours until the lights…
74. 4(b)5 marks· Biology Q4 4(b)The skin plays a role in maintaining a constant body temperature. Explain the skin's role in the reduction of internal body temperature, and suggest ONE reason why the internal body temperature should be kept constant.
75. 5(a)(ii)2 marks· Biology Q5 5(a)(ii)Suggest how loss of nerve cells from the brain may lead to loss of memory.
76. 5(b)7 marks· Biology Q5 5(b)Discuss the abuse of alcohol in humans. In your answer, identify THREE effects caused by the action of alcohol on the brain, and suggest TWO social and TWO economic consequences of alcohol abuse on society.
77. 5(b)(i)7 marks· Biology Q5 5(b)(i)Explain how the biologist's skin allowed him to maintain a relatively normal body temperature during his first day and night in the desert. In your answer, state the term used to describe the maintenance of a constant…
78. 5(b)(ii)3 marks· Biology Q5 5(b)(ii)Suggest TWO ways the biologist could modify his behavior during the day, and ONE way during the night, to help regulate his body temperature in the desert.
79. 6(a)3 marks· Biology Q6 6(a)Outline ONE major function of EACH of the following parts of the human brain: Cerebrum, Cerebellum, Medulla.
80. 6(a)(i)6 marks· Biology Q6 6(a)(i)Sketch an outline of the human body and show the location of the pancreas and the pituitary gland in the outline.
81. 6(a)(ii)6 marks· Biology Q6 6(a)(ii)Name ONE hormone secreted from EACH of the endocrine glands in (a)(i) above.
82. 6(b)3 marks· Biology Q6 6(b)State ONE similarity and ONE difference between human beings and invertebrates in the ways they cool their bodies on hot days.
83. 6(b)3 marks· Biology Q6 6(b)Complete the flow diagram in the following box to show the sequence of events involved in the pupil reflex.
84. 6(b)7 marks· Biology Q6 6(b)Describe the changes that occurred in the father's eyes to keep his son's face in focus.
85. 6(b)5 marks· Biology Q6 6(b)Explain how hormones secreted from the pancreas work together with the liver to regulate blood sugar levels.
86. 6(c)3 marks· Biology Q6 6(c)Suggest THREE conclusions that the paramedic may make if the accident victim is alive but shows no response to the pupil reflex test.
87. 6(c)3 marks· Biology Q6 6(c)Alcohol is sometimes considered an abused drug. Explain why this may be an appropriate description.
88. 6(c)(i)6 marks· Biology Q6 6(c)(i)Explain how the concentration of sugar in Marvin's blood is kept within the normal range several hours before AND after he eats a carbohydrate meal.
89. 6(d)6 marks· Biology Q6 6(d)Explain THREE physiological reasons why the consumption of excess alcohol could have caused the motorcyclist to crash.