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Asexual Reproduction

Asexual reproduction is the formation of a new individual from a single parent without fusion of gametes.

In one line: One parent, one process, many similar young ones.

Understand it

In asexual reproduction, the parent gives rise to offspring by simple cell division or by using body parts that already exist. The offspring are usually very similar to the parent because there is no mixing of genetic material from two parents. This method is common in simple organisms and in some plants where rapid multiplication is useful.

Example

Amoeba reproduces by binary fission, and bread mould reproduces by spores. Both are examples of asexual reproduction because one parent is enough.

Rule to remember

Asexual reproduction involves one parent and no fusion of gametes; it usually produces genetically similar offspring.

See it worked out

Follow the example line by line, then use the same method on new questions.

Worked example

If a leaf of Bryophyllum grows into a new plant, the process is asexual reproduction because one parent plant is enough and the new plant develops from body tissue.

Method you can reuse

1Check whether only one parent is involved.
2See whether gametes fuse or not.
3If there is no gamete fusion, classify it as asexual reproduction.
4Give a suitable example from the chapter.

Check yourself

Answer the question in your head before opening the answer.

Try it yourself

A student sees that a new organism forms from only one parent and looks very similar to it. Which type of reproduction is this?

Think first, then show answer

This is asexual reproduction because only one parent is involved and there is no fusion of male and female gametes. The offspring are usually very similar to the parent.

Common wrong answer

A common wrong answer is sexual reproduction, because students see a living organism producing offspring and forget to check whether two gametes fused.

Don't mix this up

Students often think every type of reproduction in plants must involve flowers and seeds. That is wrong because some organisms reproduce without gametes or fertilisation.

Exam tip

When the question says one parent, no gamete fusion, and many similar offspring, answer asexual reproduction quickly and clearly.