Asexual reproduction in plantsSpec 3.7
Many plants can reproduce asexually. The new plants are clones of the parent. There are natural methods and artificial methods.
Natural method: runners
A strawberry plant grows runners. These are long stems that grow sideways along the ground. At intervals, roots and a new shoot grow from the runner, forming a new plantlet. When the runner dies, the plantlet becomes an independent plant that is genetically identical to the parent.
(opens full size in a new tab)Artificial method: cuttings
- Cut a short piece of stem from the parent plant, just below a node.
- Remove the lower leaves.
- Plant the cutting in moist compost.
- Keep it moist and covered so it does not lose too much water.
- Roots grow from the cut stem and a new plant develops, genetically identical to the parent.
| Method | Natural or artificial | Example |
|---|---|---|
| Runners | Natural: the plant does it without human help | Strawberry |
| Cuttings | Artificial: people do it to get new plants | Geranium, rose |
Gardeners use cuttings to produce lots of plants with the same useful features as the parent, because the offspring are genetically identical.
Quick check
How many parents are needed for asexual reproduction?
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One.
What is pollination?
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The transfer of pollen grains from an anther to a stigma.
What does the ovule become after fertilisation?
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A seed.
Name three conditions needed for germination.
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Water, oxygen and a suitable temperature.
Give one natural and one artificial method of asexual reproduction in plants.
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Natural: runners. Artificial: cuttings.