Question: Which of the following passive dispersal mechanisms is an example of exo-zoochory? Question Answer a. Arachnids (for example spiders) use a strategy called 'ballooning' where they produce a silk thread that allows them to rise up in the air to disperse. b. The spiny water flea is an aquatic invasive zooplankton species in the Laurentian Great Lakes that is native to northern Europe and Asia. It arrived in the Great Lakes by traveling in ship ballast waters. c. Truffle spores (propagules) develop a smell that attracts animals who then consume them as food. The spores pass through the animal without being digested and are deposited at a new location when the animal defecates. d. Stinkhorn mushrooms encapsulate their spores (propagules) in a slime that smells like rotten meat and attracts flies. Flies become coated in the slime and carry the spores away.