第 1 題
1 分In the process of selective breeding, what is the specific role of the human breeder?
Pearson Edexcel IGCSE · Biology
Selective breeding：練習題
5 條多項選擇題即時批改，另有 5 條文字題附完整解題步驟，全部圍繞「Selective breeding」。
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第 2 題
1 分Which of the following describes a significant biological disadvantage of selective breeding in agricultural animals?
第 3 題
1 分When selectively breeding sheep to increase wool quality, why is it necessary for the breeder to select offspring over many generations rather than just one?
第 4 題
1 分When starting a program of selective breeding in sheep to increase wool quality, what is the first step the farmer must take?
第 5 題
1 分What is typically the first step when a farmer begins a selective breeding programme to improve the yield of a crop?
第 6 題
4 分Describe the basic process used by a farmer to selectively breed a variety of tomato plant that produces larger fruits.
先自己寫一次答案，再對照解題步驟。
第 7 題
5 分Explain how selective breeding can be applied in animal farming to improve the efficiency of meat production.
先自己寫一次答案，再對照解題步驟。
第 8 題
5 分Compare selective breeding with natural selection, highlighting a key difference in the driving force and the outcome for the species.
先自己寫一次答案，再對照解題步驟。
第 9 題
4 分A plant breeder wants to develop a new variety of wheat that has a short stem and a high grain yield.
a) Describe the steps the breeder would take to produce this variety using selective breeding.
b) Explain why this process must be repeated over many generations.
先自己寫一次答案，再對照解題步驟。
第 10 題
5 分While selective breeding is beneficial for food production, it can lead to biological problems.
a) Explain how selective breeding reduces the gene pool of a population.
b) State two potential disadvantages for animals that have been highly selectively bred.
先自己寫一次答案，再對照解題步驟。
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