A-Level AQA Biology Evolution: Bees are flying insects that fee

Question

Bees are flying insects that feed on nectar made in flowers. There are many different species of bee.

Scientists investigated how biodiversity of bees varied in three different habitats during a year. They collected bees from eight sites of each habitat four times per year for three years.

The scientists' results are shown in Figure 4 in the form they presented them.

**Figure 4**

**Key to habitats**
Natural   Town   Farmland

1. What is meant by 'species richness'?

2. From the data in Figure 4, a student made the following conclusions.  
   - The natural habitat is most favourable for bees.  
   - The town is the least favourable for bees.  
   - The data in Figure 4 support these conclusions? Explain your answer.

3. The scientists collected bees using a method that was ethical and allowed them to identify accurately the species to which each belonged.  
   1.  
   2.

4. Suggest and explain two ways in which the scientists could have improved the method used for data collection in this investigation.  
   1.  
   2.

5. Three of the bee species collected in the farmland areas were *Peponapis pruinosa*, *Andrena chlorogaster* and *Andrena piperi*.  
   What do these names suggest about the evolutionary relationships between these bee species? Explain your answer.

Bees are flying insects that feed on nectar made in flowers - AQA - A-Level Biology - Question 3 - 2018 - Paper 1

Worked Solution & Example Answer:Bees are flying insects that feed on nectar made in flowers - AQA - A-Level Biology - Question 3 - 2018 - Paper 1

What is meant by 'species richness'?

From the data in Figure 4, a student made the following conclusions. The natural habitat is most favourable for bees.

From the data in Figure 4, a student made the following conclusions. The town is the least favourable for bees.

The scientists collected bees using a method that was ethical and allowed them to identify accurately the species to which each belonged. 1.

The scientists collected bees using a method that was ethical and allowed them to identify accurately the species to which each belonged. 2.

Suggest and explain two ways in which the scientists could have improved the method used for data collection in this investigation. 1.

Suggest and explain two ways in which the scientists could have improved the method used for data collection in this investigation. 2.

What do these names suggest about the evolutionary relationships between these bee species? Explain your answer.

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