Biology 9700/43 — May/June 2012
Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Classification, Biodiversity and Conservation · Selection and Evolution · (outdated) Crop Plants · Inheritance · Photosynthesis · (outdated) Biotechnology · +4 more
The greenish warbler, Phylloscopus trochiloides, is a species of small bird that originated in northern India, on the southern edge of the Himalayan mountain range.
Fig. 1.1 shows a greenish warbler.
Thousands of years ago, populations of the greenish warbler spread around the western and eastern edges of the Himalayan mountain range to establish themselves in north-eastern Europe and Siberia.
- A gradual change in characteristics occurred in these populations, leading to different forms of the greenish warbler.
- One example of gradual change is in the song of the male warbler, which is very distinctive and is used in mating behaviour.
- When greenish warblers from north-eastern Europe meet those from Siberia no mating takes place.
- The greenish warblers from north-eastern Europe and Siberia are now considered to be two separate species.
Fig. 1.2 shows the spread of the greenish warbler.
Explain what is meant by the term species.
State the likely isolating mechanism taking place in populations of the greenish warbler.
Explain how the process of speciation occurred in the greenish warbler populations.
The rest of this paper
9 more questions- Q2(outdated) Biotechnology15M
- Q3Genetic Technology8M
- Q4(outdated) Crop Plants · Selection and Evolution · Inheritance15M
- Q5(outdated) Aspects of Human Reproduction8M
- Q6Classification, Biodiversity and Conservation8M
- Q7Inheritance8M
- Q8Photosynthesis · (outdated) Crop Plants15M
- Q9Energy and Respiration · Photosynthesis15M
- Q10Homeostasis15M