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- WRITE ABOUT A THEME: ORGANIZATION As you read inthis chapter, fungi have long formed symbiotic associationswith plants and with algae. In a short essay (100–150 words),describe how these two types of associations may lead toemergent properties in biological communities.Which of the following is an example of a symbiosis between an Ascomycete and a green algae? Group of answer choices Ferns Rhizobium and Plants Lichens Mycorrhizal Fungi and Plants HornwortsResearch 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…
- SCIENTIFIC INQUIRYINTERPRET THE DATA The feather moss Pleurozium schreberiharbors species of symbiotic nitrogen-fixing bacteria.Scientists studying this moss in northern forests found thatthe percentage of the ground surface “covered” by the mossincreased from about 5% in forests that burned 35 to 41 yearsago to about 70% in forests that burned 170 or more years ago.From mosses growing in these forests, they also obtained thefollowing data on nitrogen fixation: Age(years after fire) N fixation rate[kg N/(ha · yr)] 35 0.001 41 0.005 78 0.08 101 0.3 124 0.9 170 2.0 220 1.3 244 2.1 270 1.6 300 3.0 355 2.3If all of the saprophytic fungi in an ecosystem died, which of the following would be a likely short-term result? Group of answer choices Plants would not be able to absorb nutrients from the soil as effectively Dead plant material would be decomposed more quickly, releasing higher levels of CO2 Less carbon dioxide would be released into the atmosphere because dead plant material would not be decomposed Plants would be unable to absorb nitrogen as efficiently because their root symbiotic fungi would be unable to break gaseous nitrogen apart Plants would be unable to absorb nitrogen as efficiently because their root symbiotic fungi would be unable to break gaseous nitrogen apartSharks and bony fish are classified within the phytoplankton because they are often found in the well- surface areas of the ocean .
- If a symbiotic relationship between a fungus and its host plant is said to be commensal, what does this mean? Group of answer choices the fungi benefit, but the plant is unaffected the fungi are harmed and the plant benefits the plant is harmed and the fungi benefits both plant and fungi benefitWhich of the following pairs that relate to terrestrial environmentsdoes not match?a) Soil—minimal biodiversityb) Bacillus —endosporesc) Streptomyces —geosmin productiond) Fungi—lignin degradatione) Rhizosphere—soil that adheres to plant rootWhat is the term for the symbiotic association between fungi and cyanobacteria? a. lichen b. mycorrhizae c. epiphyte d. nitrogen-fixing nodule
- Mountain yellow-legged frogs live in the Sierra Nevada mountains.Their tadpoles mainly eat algae. One predator of adult frogs is a gartersnake, which is eaten by bullfrogs. Recently, a chytrid fungus haskilled many adult mountain yellow-legged frogs. How might thischange affect the algae, garter snakes, and bullfrogs?Mycorrhizal fungi live in the soil and interact with the roots of plants. Essentail nutrients (e.g. nitrogenous compounds) are taken from the soil by the fungi and transferred to the plant roots. The fungi extract carbohydrates from the plant roots. What type of interaction is occurring? Group of answer choices commensalism predation competition mutualismMarine Biology a) Despite being so large, the ocean contributes to (more or less) primary production because it is__________, which means it doesn't have very many nutrients. Even so, _______________can survive her and absorb the few nutrients because they are____________. Small things have more_____________ b) cyanobacteria were the first to produce oxygen and form stromatolites made of ______________