How do Organisms Reproduce? Practice
Solve chapter-level practice questions for How do Organisms Reproduce? with reveal-only solutions and quick revision support.
Practice Set 1 — Modes of Reproduction
Asexual methods and sexual reproduction in plants.
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Practice Set 2 — Human Reproduction and Health
Male and female systems, menstruation, and contraception.
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Quick Q&A Before You Revise
Why is variation beneficial to a species?
Environments keep changing (temperature, water, food, disease). If a population has variations, at least some individuals may have features that let them survive the new conditions, so the species is not wiped out.
Can you consider cell division as a type of reproduction in unicellular organisms?
Yes. In a unicellular organism, division of the single cell produces two new individuals, so cell division here is reproduction itself.
What are the advantages of sexual reproduction over asexual reproduction?
Sexual reproduction combines DNA from two parents, so it produces much more variation. This greater variation gives the species a better chance of surviving environmental change and is important for evolution.
Why does menstruation occur?
Every cycle the uterus prepares a thick lining to receive a fertilised egg. If fertilisation does not happen, this lining is shed, along with blood, as menstruation, and the cycle begins again.