Natural cloning in plants

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Created by: TaraCBeckworth
Created on: 04-06-17 14:47

What is cloning?

A process which generates a genetically identical copy of the parent

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Name 4 places natural plant cloning occurs

Bulbs, runners, rhizomes and stem tubers

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Bulbs

Leaf bases swell with food stores, buds form internally which then develop into shoots and new plants in the next growing season (e.g. daffodils)

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Runners

The lateral stem grows away from the parent plant and roots develop where the runner touches the ground, a new plant develops and the runners wither away leaving the new plant separate from parent (e.g. spider plants, strawberry plants)

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Rhizomes

A rhizome is a specialised horizontal stem running underground, it can become swollen with stored food and buds develop to form new vertical shoots, which then become independent plants (e.g. marram grass)

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Stem Tubers

The tip of an underground stem becomes swollen with stored food to form a tuber or storage organ, buds on organ develop to produce new shoots (e.g. potato)

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People often take cuttings of a plant, explain why this is done

Short sections of stems can be cut and replanted, a rooting hormone is added and the cutting will grow roots and then become an independent plant which is genetically identical to the plant it got cut from

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Give an advantage of cutting

If there is a plant with desired characteristics, the offspring will also have all these desirable characteristics

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Give a disadvantage of cutting

Reduces genetic variation dramatically, if a disease was to affect the plant, it would affect the whole crop

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Other cards in this set

Card 2

Front

Name 4 places natural plant cloning occurs

Back

Bulbs, runners, rhizomes and stem tubers

Card 3

Front

Bulbs

Back

Card 4

Front

Runners

Back

Card 5

Front

Rhizomes

Back

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Natural cloning in plants