Mention two methods by which weed seeds are dispersed - Leaving Cert Agricultural Science - Question (c) - 2012
Question (c)
Mention two methods by which weed seeds are dispersed.
For each method, name a common weed that uses this method of dispersal.
Worked Solution & Example Answer:Mention two methods by which weed seeds are dispersed - Leaving Cert Agricultural Science - Question (c) - 2012
Step 1
Mention two methods by which weed seeds are dispersed.
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Answer
Wind: Many weeds use wind as a dispersal method. For example, dandelion seeds have lightweight parachute-like structures that allow them to be carried by the wind.
Animals: Some weeds employ animals to aid in their seed dispersal. The burdock plant, for example, has barbed seeds that cling to animal fur, enabling transportation.
Step 2
For each method, name a common weed that uses this method of dispersal.
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Answer
For Wind: A common weed that utilizes wind dispersal is the thistle.
For Animals: A commonly recognized weed using animal dispersal is the blackberry.
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