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Q47 - Gut Passage and Germination of Mimosa Seeds Ingested by Goats

Theoretical A Real exam question - full text reproduced under IBO's CC BY-NC-SA 4.0 license
Coevolution & Species Interactions

Goats are fed with alfalfa and corn stubble. At time 0, they were also fed with Mimosa seeds. The presence of viable Mimosa seeds in goat faeces was recorded with a germination experiment comparing egested and control seeds.

Figure 1. Figure 1.

Using the information and data, determine which of the statements are true or which are false.

A. Mimosa seed can survive up to 3 days in the goat digestive system.
B. The passage through the goat digestive system decreases seed germination.
C. Number of seeds egested after ingestion is highest after 24 hours.
D. Goats could act as legitimate disperser of Mimosa seeds.
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Question reproduced from IBO 2016, Theoretical Paper A, licensed under CC BY-NC-SA 4.0 - attributed to the International Biology Olympiad. Open the full exam PDF · Community solutions (unofficial)