1994 年
生物 · 共 59 題 · 點擊選項即時核對答案
Directions: Questions 21 and 22 refer to the diagram below which shows two woody shoots taken from the same plant. The shoots were ringed by removing a ring of the outer tissue at the lower part. Wax was applied to shoot X and shoot Y in the positions shown in the diagram. Both shoots were then placed in a red dye solution.
Sections were then cut across the shoots at region PQ and examined under a low-powered microscope. Which of the following shows the most probable location of the red colour? (Key: ■ red colour)
Directions: Questions 23 and 24 refer to the graph below which shows how the metabolic rate of a naked person varies with the temperature of the surrounding air:
Which of the following statements about the person is correct when the air temperature changes from 10°C to 20°C?
Directions: Questions 23 and 24 refer to the graph below which shows how the metabolic rate of a naked person varies with the temperature of the surrounding air:
Which of the following is the main process of heat loss from the body when the air temperature is 40°C?
Directions: Questions 25 and 26 refer to the diagram below which shows a section of the skin of a man:
Which of the following correctly describes the functions of the different structures of the skin?
| Structure 1 | Structure 2 | Structure 5 | |
|---|---|---|---|
| absorbs oxygen | produces sweat | absorbs vibration | |
| prevents against mechanical damage | stores food | reduces heat loss | |
| prevents the entry of bacteria | reduces evaporation | stores food | |
| detects changes in air temperature | kills bacteria | supplies food to the skin |
Directions: Questions 25 and 26 refer to the diagram below which shows a section of the skin of a man:
Which of the following correctly describes the immediate responses of the different structures of the skin when the man enters a cold room?
| Structure 3 | Structure 4 | Structure 5 | |
|---|---|---|---|
| dilates | contracts | no change | |
| constricts | contracts | no change | |
| dilates | relaxes | becomes thicker | |
| constricts | relaxes | becomes thicker |
Directions: Questions 27 and 28 refer to the diagram below which shows the path of light rays from a distant object to a defective eye through a corrective lens:
What is the likely cause of this eye defect?
Directions: Questions 27 and 28 refer to the diagram below which shows the path of light rays from a distant object to a defective eye through a corrective lens:
Which of the following correctly describes the conditions of different structures of the eyeball?
| Ciliary muscles | Suspensory ligament | Lens | |
|---|---|---|---|
| contracted | tension increased | thick | |
| contracted | tension decreased | thick | |
| relaxed | tension decreased | thin | |
| relaxed | tension increased | thin |
Which of the following responses is controlled by the medulla of the brain?
Which of the following statements about insulin is INCORRECT?
Directions: Questions 31 and 32 refer to the diagram below which shows an experimental set-up to study the effect of light on the growth of oat coleoptiles:
Which coleoptiles will bend towards the light source?