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The diagram shows a tulip plant - OCR Gateway - GCSE Biology - Question 18 - 2022 - Paper 1
Question 18
The diagram shows a tulip plant. Many gardeners like to grow tulip plants. (a) Tulips can be grown from seeds produced from sexual reproduction. They can also be g... show full transcript
Worked Solution & Example Answer:The diagram shows a tulip plant - OCR Gateway - GCSE Biology - Question 18 - 2022 - Paper 1
Step 1
Explain why most gardeners choose to grow bulbs produced by asexual reproduction rather than seeds.
Answer
Most gardeners prefer to grow bulbs produced through asexual reproduction because:
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Consistency: Bulbs produce genetically identical offspring, ensuring that the characteristics of the parent plant are preserved.
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Time Efficiency: Growing from bulbs allows for faster cultivation since they do not require the lengthy germination period associated with seeds. This speeds up the overall planting and harvesting process.
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Predictability: When using bulbs, gardeners are certain about the floral traits that will emerge, unlike seeds where the outcome can vary due to genetic recombination.
Step 2
Step 3
Calculate how many infected tulips.
Answer
To find the number of infected tulips:
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Calculate 1.5% of the total number of tulips grown:
Total tulips = 2.0 × 10^9 tulips
Infected tulips = 1.5% of total tulips = 0.015 × 2.0 × 10^9 = 3.0 × 10^7 tulips = 30,000,000 tulips.
Therefore, the number of infected tulips is 30,000,000.