1990 年
生物 · 共 30 題 · 點擊選項即時核對答案
Questions 20 and 21 refer to the diagram below which shows the inner lining of a certain part of the human body :
The function of this lining is to facilitate
Which of the following statements about binary fission in amoeba is INCORRECT ?
Questions 23 and 24 refer to the diagram below which shows the pathway of water movement through different regions of a plant. The arrows in the diagram indicate the direction of water movement.
Which of the following combinations is correct ?
| Process (i) | Process (ii) | Process (iii) | |
|---|---|---|---|
| diffusion | osmosis | diffusion | |
| osmosis | evaporation | diffusion | |
| diffusion | osmosis | evaporation | |
| osmosis | evaporation | evaporation |
Questions 23 and 24 refer to the diagram below which shows the pathway of water movement through different regions of a plant. The arrows in the diagram indicate the direction of water movement.
Which of the following are functions of tissue X ?
Which of the following types of blood vessels has the largest total surface area in a mammalian body ?
Questions 26 and 27 refer to the following experiment. A sample of soil in a crucible is heated at 103°C in an oven until a constant weight is obtained. The soil sample is then heated strongly in the crucible with a bunsen flame until a constant weight is again obtained.
The purpose of heating the soil sample at 103°C in an oven is to
Questions 26 and 27 refer to the following experiment. A sample of soil in a crucible is heated at 103°C in an oven until a constant weight is obtained. The soil sample is then heated strongly in the crucible with a bunsen flame until a constant weight is again obtained.
The purpose of the experiment is to determine
Questions 28 and 29 refer to the graph below which shows the percentage of plasmolysed plant cells at different concentrations of sucrose solution :
The result suggests that the plant cells
Questions 28 and 29 refer to the graph below which shows the percentage of plasmolysed plant cells at different concentrations of sucrose solution :
Which of the following correctly describes the condition of most of the plant cells at a sucrose concentration of 0.3 mol dm⁻³ ?
Which of the following crop plants is LEAST likely to deplete the soil of nitrates ?