問 1
1 点Which statement correctly defines clones in the context of reproduction?
Oxford AQA IGCSE · CORE Biology (9221)
Reproduction：練習問題
その場で採点される選択問題 5 問と、解説つきの記述問題 5 問。すべて「Reproduction」からの出題です。
10 問27 点無料・登録不要
問 2
1 点In asexual reproduction, an individual is produced that is genetically identical to its parent. Which of the following statements explains why genetic variation is absent in this process?
問 3
1 点Consider the processes of cell division in multicellular organisms. If a body cell divides by mitosis and a cell in a reproductive organ divides by meiosis, what is the key difference in the outcome for the resulting cells?
問 4
1 点Which statement accurately describes asexual reproduction?
問 5
1 点According to the OxfordAQA syllabus, why does sexual reproduction lead to genetic variety in the offspring, whereas asexual reproduction does not?
問 6
2 点What term is used to describe the genetically identical individuals that are produced as a result of asexual reproduction?
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 7
4 点Describe the specific role of gametes in sexual reproduction and explain how their fusion contributes to genetic variety in the resulting offspring.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 8
5 点Explain why the offspring produced from asexual reproduction are referred to as clones, and identify the primary biological reason for the total absence of genetic variation in this process.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 9
4 点There are two main forms of reproduction in living organisms, each resulting in different outcomes for the offspring.
a) Name the form of reproduction that results in clones.
b) Explain why sexual reproduction leads to genetic variety in the offspring, whereas asexual reproduction does not. In your answer, refer to the role of gametes and the mixing of genetic information.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 10
7 点Reproduction ensures the continuation of a species and can occur through different cellular processes.
a) Compare the process of mitosis and meiosis in terms of the number of divisions and the genetic relationship between the parent cell and the resulting daughter cells.
b) Explain why sexual reproduction results in variety in the offspring while asexual reproduction results in clones.
c) In terms of chromosomes, explain what happens during fertilisation to ensure the embryo has the correct number of chromosomes in its body cells.
まず自分で答えを書いてから、解説と照らし合わせましょう。
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