Mechanisms of Seed Dispersal


Dispersal by Animals cont’d



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Mechanisms of Seed Dispersal

Dispersal by Animals cont’d

  • When the seeds of the plant become mature, the surrounding fruit becomes softer and its sugar content increases.
  • Some fruits become fragrant and brightly colored to advertise their ripeness to animals.
  • M. (April 16, 2004). Our Florida Garden. Retrieved January 26, 2007, from Welcome to Mimi's HomePage Web site: http://www.mchristi.wso.net/new_garden.html

Dispersal by Animals cont’d

  • Interactions with animals have helped flowering plants become the most successful plants on earth.
  • Brown capuchin monkey (Cebus apella) snarling while eating fruit.
  • Butler, R. (2007). World Travel Photos. Retrieved January 26, 2007, from Tropical Rainforest Conservation Web site: http://www.mongabay.com/images/peru/tambopata/Tambopata_1028_4366a.jpg

Animals eat fruits and defecate:

  • When the animal ingests the fruit the animal digests the fleshy part.
    • The seed coat usually prevents the digestion of the seeds.
  • Many such fruits contain laxatives to help the process along.
  • The tough seeds usually pass unharmed through the digestive tract.
  • Dispersal by Animals cont’d

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