Figure 9 shows a plant with plantlets growing from it - Edexcel - GCSE Biology - Question 5 - 2022 - Paper 1
Question 5
Figure 9 shows a plant with plantlets growing from it.
If a plantlet touches soil, it will grow roots and become a new plant.
This is an example of asexual reproduc... show full transcript
Worked Solution & Example Answer:Figure 9 shows a plant with plantlets growing from it - Edexcel - GCSE Biology - Question 5 - 2022 - Paper 1
Step 1
State one advantage of asexual reproduction for this plant.
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Answer
One advantage of asexual reproduction is that it allows the plant to quickly colonize an area since the new plant maintains the same characteristics as the parent plant.
Step 2
Describe the effect of temperature on the number of plantlets produced by these plants.
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Answer
At lower temperatures such as 5°C, 10°C, and again at 30°C, no plantlets are produced. The number of plantlets increases significantly at 15°C, reaching a peak of 12 plantlets at 25°C. However, production declines again at higher temperatures, indicating that there is an optimal temperature range for growth, specifically around 20°C to 25°C.
Step 3
Which of these would improve the results of this investigation?
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Answer
B grow each plant in a different type of soil is the best choice, as it controls for soil factors that might influence plantlet production.
Step 4
Explain one advantage of sexual reproduction.
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Answer
An advantage of sexual reproduction is that it allows for genetic variation among offspring, which can lead to increased survival chances in changing environmental conditions.
Step 5
Explain which plants the gardener should use.
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Answer
The gardener should select plants L and M because they have the desired traits: plant L has the large white flowers needed, and plant M has the striped leaves that are desired. Plant L's large size can also contribute to the trait the gardener wishes to produce.
