Evolution of a fungus from parasitic to mutualist and its effects on the host individual. Concept introduction: A trait or character is a feature of an organism. Triats like ancestral traits are what the modern generation has derived from ancestor. A derived trait is a trait that the current organism has, and previous one didn't or they have undergone a secondary loss (this may also refer to structures that are not present in an organism, but were present in its ancestors). Lack of structure is a derived trait saprobes, symbionts, or parasites. The ancestor of the mutualist fungi adopted parasitic mode of nutrition that causes the death of the host. The progeny of the parasitic fungi adopted the evolutionary changes in their mode of nutrition (mutations) and hence followed the mutualism (symbiotic relationship) that would not harm the host but also benefit both host and the fungi.

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Answer 1

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31.1, Problem 2CC

Summary Introduction

To determine: Evolution of a fungus from parasitic to mutualist and its effects on the host individual.

Concept introduction: A trait or character is a feature of an organism. Triats like ancestral traits are what the modern generation has derived from ancestor. A derived trait is a trait that the current organism has, and previous one didn't or they have undergone a secondary loss (this may also refer to structures that are not present in an organism, but were present in its ancestors). Lack of structure is a derived trait saprobes, symbionts, or parasites. The ancestor of the mutualist fungi adopted parasitic mode of nutrition that causes the death of the host. The progeny of the parasitic fungi adopted the evolutionary changes in their mode of nutrition (mutations) and hence followed the mutualism (symbiotic relationship) that would not harm the host but also benefit both host and the fungi.

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Research an interesting example of mutualism, and present your findings in a post. The goal here is to provide examples beyond what is presented in lecture and/or your textbook. These can be animal-animal, animal-fungal, plant-fungal, plant-animal, bacteria-animal....the sky is the limit! For this particular forum, you'll be able to see other classmates postings even before you post your own. This is so you can present an example that's different from what's already been discussed. Remember that mutualistic interactions are associations that benefit both parties -- so your response should clearly indicate the role each partner plays. Let us know where these organisms are found, what kind of habitat they live in, and any other interesting , pertinent information. Also, please comment on how natural selection likely played a role in the development of your example. You can use your imagination a bit here -- I'd just like to see you connect the ideas. Your posting must be at least…

Answer 2

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31.1, Problem 2CC

Summary Introduction

To determine: Evolution of a fungus from parasitic to mutualist and its effects on the host individual.

Concept introduction: A trait or character is a feature of an organism. Triats like ancestral traits are what the modern generation has derived from ancestor. A derived trait is a trait that the current organism has, and previous one didn't or they have undergone a secondary loss (this may also refer to structures that are not present in an organism, but were present in its ancestors). Lack of structure is a derived trait saprobes, symbionts, or parasites. The ancestor of the mutualist fungi adopted parasitic mode of nutrition that causes the death of the host. The progeny of the parasitic fungi adopted the evolutionary changes in their mode of nutrition (mutations) and hence followed the mutualism (symbiotic relationship) that would not harm the host but also benefit both host and the fungi.

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Answer 3

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31.1, Problem 2CC

Summary Introduction

To determine: Evolution of a fungus from parasitic to mutualist and its effects on the host individual.

Concept introduction: A trait or character is a feature of an organism. Triats like ancestral traits are what the modern generation has derived from ancestor. A derived trait is a trait that the current organism has, and previous one didn't or they have undergone a secondary loss (this may also refer to structures that are not present in an organism, but were present in its ancestors). Lack of structure is a derived trait saprobes, symbionts, or parasites. The ancestor of the mutualist fungi adopted parasitic mode of nutrition that causes the death of the host. The progeny of the parasitic fungi adopted the evolutionary changes in their mode of nutrition (mutations) and hence followed the mutualism (symbiotic relationship) that would not harm the host but also benefit both host and the fungi.

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Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31.1, Problem 2CC

Summary Introduction