Question detail
Which option gives the correct cause-and-effect relationship for Reproduction, Meiosis: students must explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reproduction
Question
- A. Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Meiosis because students must explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development.
- B. Reversed cause: Claiming meiosis is used for body growth. This would blur Mitosis vs meiosis instead of testing Meiosis.
- C. Missing link: Claiming mitosis produces gametes. This misses the objective focus on explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development.
- D. Different process: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Meiosis.
Answer
The correct option is Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Meiosis because students must explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development.. It is the only option that keeps Mitosis vs meiosis separate and answers the approved learning objective in Meiosis.
Explanation
The correct option is Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Meiosis because students must explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development.. Correct cause and effect: Mitosis maintains chromosome number; meiosis halves chromosome number. This matches Meiosis because students must explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development. is correct because Mitosis maintains chromosome number; meiosis halves chromosome number. The learning objective says students must explain that after fertilisation the new cell divides by mitosis and embryo cells differentiate during development, so the answer must stay inside Meiosis. The alternative options are wrong because they either claiming meiosis is used for body growth., claiming mitosis produces gametes., or drift away from mitosis questions must focus on identical cells, growth, repair, asexual reproduction, or maintained chromosome number..
Common mistake
Misunderstanding the role of mitosis after fertilisation
Students often think that fertilisation itself is a mitotic division, or that the zygote immediately undergoes mitosis to produce a single cell, rather than recognising that fertilisation restores the diploid chromosome number and the resulting zygote then divides by mitosis to form the embryo.
Explain that fertilisation is the fusion of two haploid gametes to create a diploid zygote. The zygote then undergoes a series of mitotic divisions (cleavage) to increase cell number while maintaining the chromosome number, and these cells subsequently differentiate into the various tissues of the developing embryo.
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