2005 年
生物 · 共 60 題 · 點擊選項即時核對答案
Insecticides are found in the body of penguins living in the South Pole, which is separated from farming areas by oceans. How do insecticides in the farming areas get into the body of penguins?
Carbohydrate produced in leaves during photosynthesis can be carried to the roots for storage. What is the form of carbohydrate transported and the path involved?
| Form of carbohydrate | Path of transport | |
|---|---|---|
| sugar | xylem | |
| sugar | phloem | |
| starch | xylem | |
| starch | phloem |
A student found that the leaves of a plant growing in the laboratory had turned yellow. Which of the following is the least probable explanation for this observation?
Which of the following comparisons between blood and lymph is correct?
| Blood | Lymph | |
|---|---|---|
| fat absent | fat present | |
| glucose present | glucose absent | |
| phagocytes absent | phagocytes present | |
| red blood cells present | red blood cells absent |
Questions 45 and 46 refer to the graph below, which shows the rates of carbon dioxide uptake and release of a plant under different light intensities:
When the light intensity is 6 units, what is the actual rate of photosynthesis of the plant in terms of the rate of carbon dioxide uptake?
Questions 45 and 46 refer to the graph below, which shows the rates of carbon dioxide uptake and release of a plant under different light intensities:
At 1 unit of light intensity, the rate of carbon dioxide uptake is zero. This is because at this light intensity
Questions 47 and 48 refer to the set-up below, which is used to study the water balance of a small plant: After 5 hours, the following results are recorded: Change in reading of the electronic balance = p gram Change in water level in the measuring cylinder = q cm³ where p and q represent the magnitude of the change (Given: mass of 1 cm³ of water = 1 gram)
Which of the following represents the amount of water retained by the plant in 5 hours?
Questions 47 and 48 refer to the set-up below, which is used to study the water balance of a small plant: After 5 hours, the following results are recorded: Change in reading of the electronic balance = p gram Change in water level in the measuring cylinder = q cm³ where p and q represent the magnitude of the change (Given: mass of 1 cm³ of water = 1 gram)
The value p will be the highest when the set-up is put under
Flowering plants may reproduce by forming stem tubers, rhizomes, bulbs or corms. These ways of reproduction are said to be asexual because
A hormone differs from an enzyme in that