1999 年
生物 · 共 59 題 · 點擊選項即時核對答案
Directions : Questions 41 to 43 refer to the diagram below, which shows the longitudinal section of a flower :
Meiosis occurs in
Directions : Questions 41 to 43 refer to the diagram below, which shows the longitudinal section of a flower :
Fertilization may take place in
Directions : Questions 41 to 43 refer to the diagram below, which shows the longitudinal section of a flower :
Which structures would be reduced or absent in a wind-pollinated flower ?
Directions : Questions 44 and 45 refer to the diagram below, which shows a section of a broad bean :
Which parts of the broad bean are formed from the fertilized egg ?
Directions : Questions 44 and 45 refer to the diagram below, which shows a section of a broad bean :
Which part of the broad bean would be stained blue-black by iodine solution ?
Directions : Questions 47 to 49 refer to the diagram below, which shows a set-up used by Eric in an experiment. After one week, he noted whether the onion bulb in each beaker had germinated into a new plant.
This experiment was designed to find out whether the development of new plants from the onion bulbs required
Directions : Questions 47 to 49 refer to the diagram below, which shows a set-up used by Eric in an experiment. After one week, he noted whether the onion bulb in each beaker had germinated into a new plant.
If the onion bulbs in both beakers germinate after one week, what conclusion can be drawn ?
Directions : Questions 47 to 49 refer to the diagram below, which shows a set-up used by Eric in an experiment. After one week, he noted whether the onion bulb in each beaker had germinated into a new plant.
If the onion bulbs in both beakers do not germinate after one week, what conclusion can be drawn ?
Directions : Questions 50 and 51 refer to the pedigree below, which shows the inheritance of blood groups in a family :
Which cross(es) can be used to deduce which blood group (A or O) is dominant ?
Directions : Questions 50 and 51 refer to the pedigree below, which shows the inheritance of blood groups in a family :
If A represents the allele for blood group A and O represents the allele for blood group O, what are the probable genotypes of individuals 1 and 2 ?
| Individual 1 | Individual 2 | |
|---|---|---|
| AO | AA | |
| AO | AO | |
| AA | AA, AO | |
| AO, AA | AA |