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Ch. 29 - Fungi

Chapter 28, Problem 13

Would you describe the association between Pilobolus and cows as a symbiotic relationship? Explain your answer.

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Hello everyone and welcome to today's video. Today we have a rather long problem. However, I promise you it's not going to be that bad ones. We start breaking it down. So we have these globalist fungus and they throw their spare anja on grass. This is how they reproduced the majestic on the grass and then they are ingested by a cow. This franchise stays in the cow's digestive system unharmed. When the cow migrates another area, esperanza are excreted along with the cows thesis are done. This helps the fungi disperse into a new location. This type of symbiotic relationship is called. So remember when we have a symbiotic relationship we always need to look at both sides to see how they are affected or unaffected. So here the first site is going to be the fun guy and the other side is going to be the cow. Now there is no evidence here in this text that the cow was ever affected. In fact we were told that these parents are unharmed inside of the cow, but we're really not told that the cow is harmed at all by this. So the cow remains unaffected. On the other hand, the fun guy is benefited because this helps with dispersal of their sports. So this fun guy is going to be benefited when we have a side that is benefited and a side that is unaffected is going to be called calm mental ism. So that is the final answer to a question and I really hope this video helped you
Related Practice
Textbook Question

Many mushrooms are extremely colorful. One hypothesis is that the colors serve as a warning to prevent animals from eating mushrooms, much like the bright yellow and black stripes on wasps help to deter potential predators. Design an experiment to test this hypothesis.

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Textbook Question

Some fungi have elaborate mechanisms for dispersing spores. For example, the 'squirt gun' fungus Pilobolus, which grows in cow dung, forcibly shoots off tiny black sporangia filled with spores. Any sporangia that are flung onto fresh grass are likely to be eaten by a grazing cow, passed through its digestive system unharmed, and deposited in a new batch of dung. The spores carried within the sporangia are perfectly positioned to grow into a new mycelium. Pilobolus is a zygomycete, and the sporangia just described produce asexual spores. In contrast, which of the following best describes what happens during the sexual phase of its life cycle? a. It produces eight ascospores in each ascus. b. It produces basidiospores that grow into mushrooms. c. It produces motile sperm and eggs. d. Hyphae from two compatible mating types fuse and form a zygosporangium.

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Textbook Question

Both asexual sporangia (shown in the photo) and zygosporangia can be found in cow dung. Make a simplified drawing that illustrates the events of plasmogamy, karyogamy, and meiosis that occur during sexual reproduction in Pilobolus. Be sure to indicate and label the zygosporangium.

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Textbook Question

Explain the process of extracellular digestion that occurs during the growth of Pilobolus mycelia through dung.

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Textbook Question

Using high-speed video, researchers have measured several variables associated with sporangium discharge in various spore-shooting fungi. Based on the data in the table shown here, how do the launch speed and acceleration of Pilobolus compare with those of the other fungi? How does launch speed for each species compare with the top speed of 44 km/h reached by Jamaican athlete Usain Bolt during his 2009 world-record-setting 100-m race?

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Textbook Question

Propose an experiment to test whether Pilobolus shoots its sporangia preferentially toward light. Hypothesize why such a preference might be advantageous.

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