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How are seeds dispersed? There are some factors which help them to disperse like wind, water, animals, human beings etc.
Answers
Plants disperse their seeds in lots of different ways. Some seeds are transported by the wind and are shaped to float, glide or spin through the air.
Plants growing near a river may use the flowing water to transport their seeds.
Some seed pods are designed to explode and throw the seeds a good distance from the parent plant.
Many plants also use animals to carry their seeds. This type of seed may have handy hooks which attach to an animal’s fur. Alternatively, the plants might make tasty fruit to enclose the seeds, which attract animals to eat them.
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Answer:
Explanation:
Wind:
Seeds from plants like dandelions, swan plants and cottonwood trees are light and have feathery bristles and can be carried long distances by the wind.
Water:
The seeds float away from the parent plant. Mangrove trees live in estuaries. If a mangrove seed falls during low tide, it can begin to root in the soil. If the seeds fall in the water, they are carried away by the tide to grow somewhere else.
Animals:
Small seeds can be carried on the feet of birds and other animals. Fruits with hooks and barbs, e.g. the burdock fruit are carried in the hair, fur and wool of animals. Squirrels bury nuts, including acorns, for food supplies over the winter, but sometimes leave some behind which may grow into new plants in the spring.
Humans:
Humans play a big part in seeds dispersal today. Seeds stick into socks, shoes, and other clothing. Vehicles and farm machinery can get seeds and plant parts caught underneath. Transported soil, animal feed, and seed can contain weed propagules.
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