Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 17, Problem 5WIO
In an article in Nature magazine, Sean Nee wrote about the diversity of species on Earth: “Earth’s real biodiversity is invisible, whether we like ii or not.” What does that statement mean?
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Biodiversity: Values & Threats
1. In terms of the number of species in various taxonomic groups, what types of organisms represent thegreatest diversity on our planet? And how do we know we’re not “done” cataloging all of life on earth?
2. When scientists try to estimate the number of species that actually exist on earth today, why is thefigure so variable?
3. Describe the global biodiversity patterns found in relation these parameters:Latitude Precipitation Elevation
4. In a well-crafted paragraph (5-7 descriptive sentences) specifically describe 4 key ways thatbiodiversity benefits mankind. Use examples to support each of your statements.
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Chapter 17 Solutions
Biology: Concepts and Investigations
Ch. 17.1 - What are two domains that contain prokaryotes?Ch. 17.1 - Prob. 2MCCh. 17.1 - Prob. 3MCCh. 17.1 - Prob. 4MCCh. 17.2 - Prob. 1MCCh. 17.2 - Prob. 2MCCh. 17.2 - What does the Gram stain reveal about a cell?Ch. 17.2 - Prob. 4MCCh. 17.2 - Prob. 5MCCh. 17.2 - How are molecular data changing microbial...
Ch. 17.2 - Prob. 7MCCh. 17.3 - Prob. 1MCCh. 17.3 - Prob. 2MCCh. 17.3 - Prob. 3MCCh. 17.4 - Prob. 1MCCh. 17.4 - Prob. 2MCCh. 17.4 - What adaptations enable pathogenic bacteria to...Ch. 17.4 - What are some practical uses of bacteria and...Ch. 17.5 - Prob. 1MCCh. 17.5 - Prob. 2MCCh. 17 - A prokaryotic cell is one that a. lacks DNA. b....Ch. 17 - Which of these is a distinguishing characteristic...Ch. 17 - What feature distinguishes the cell walls of...Ch. 17 - Prob. 4MCQCh. 17 - Prob. 5MCQCh. 17 - Prob. 6MCQCh. 17 - Prob. 7MCQCh. 17 - Prob. 8MCQCh. 17 - Explain why the antibiotics penicillin and...Ch. 17 - Give five examples that illustrate how bacteria...Ch. 17 - If you were developing a new "broad-spectrum"...Ch. 17 - Ernst Mayr defined a biological species as a...Ch. 17 - In an article in Nature magazine, Sean Nee wrote...Ch. 17 - Ecosystems rely on nitrogen -fixing bacteria,...Ch. 17 - Prob. 7WIOCh. 17 - Prob. 8WIOCh. 17 - Prob. 9WIOCh. 17 - Prob. 10WIOCh. 17 - Mycobacterium tuberculosis causes most cases of...Ch. 17 - Prob. 1PITCh. 17 - Add autotrophs, heterotrophs, phototrophs, and...Ch. 17 - Prob. 3PITCh. 17 - Prob. 4PITCh. 17 - Prob. 5PIT
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- What is the definition of species diversity and the concept of biodiversity? Explain each in five (5) sentences.arrow_forwardWhy we need conservation of biodiversity in living world?arrow_forwardIt is said that biodiversity facilitates to sustain a sound life, Elaborate the above sentence with the gravity of Biodiversity in every walks of human being.arrow_forward
- Ecology and Biology: Shannon Diversity Index: Definition & Example The Shannon Diversity Index (sometimes called the Shannon-Wiener Index) is a way to measure the diversity of species in a community. Denoted as H, this index is calculated as: H = -Σpi * ln(pi) where: Σ: A Greek symbol that means “sum” ln: Natural log pi: The proportion of the entire community made up of species i The higher the value of H, the higher the diversity of species in a particular community. The lower the value of H, the lower the diversity. A value of H = 0 indicates a community that only has one species. The Shannon Equitability Index is a way to measure the evenness of species in a community. The term “evenness” simply refers to how similar the abundances of different species are in the community. Denoted as EH, this index is calculated as: EH = H / ln(S) where: H: The Shannon Diversity Index S: The total number of unique species What is the Shannon diversity index value for this community? What…arrow_forwardAnother ecologist reported a diversity index value of 1.511 in a different community nearby the one you studied. This community is _ diverse than the one you calculated. Please see the attached image to get a better grasp of the question. How to Calculate Biodiversity and Ecology College Biology 2 Advanced Concepts Background Information In the Shannon index, p is the proportion (n/N) of individuals of one particular species found (n) divided by the total number of individuals found (N), ln is the natural log, Σ is the sum of the calculations, and s is the number of species... Species Evenness Species evenness takes into account the number of species and the relative abundance of species in a community. Several indices have been proposed. Two of the commonly used measures of evenness are the Shannon index (H) and the Simpson index (D). Question 2: What is the Shannon diversity index value for this community? What is the species evenness for this community?arrow_forwardNature is declining globally at rates unprecedented in human history – and the rate of species extinctions is accelerating, with grave impacts on people around the world. Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. (i) Greater species diversity ensures natural sustainability for all life forms. Discuss. (ii) How can the loss of biodiversity be prevented?arrow_forward
- Please help me to choose one of the best asnwer for this 2 multiple choice questions, Thank you ) which of the following is NOT a definiton for biodiversity? A) the number of individuals in a population B) The variety of ecosystems within a given area C) All of these are possible definitions of biodiversity D)The number of alleles for a particular gene E)The number of species in a community 2)Imagine community with a biodiversity of 25 species.one species is hunted to extinction by humans, after which the community is protected from any human intervention. HOwever a year later you find that biodiversity is down to 5 species.what does this tell you about the species that went extinct due to hunting? A)It was a weak competitor B)It must have been a predator C) it may have been keystone species D) it must have been producer E) It was a virulent pathpgenarrow_forwardWhat does species diversity indicate? the total number of organisms on the planet the number of different ecosystems on the planet the number of different organisms on the planet the number of combinations of different genes that can emerge in offspringarrow_forwardCan someone please help me to answer 2 question in my biology homework What is biodiversity? Be sure to distinguish genetic diversity, species diversity, and ecosystem diversity. What are some of the benefits to humans of maintaining biodiversity? List at least five. thank youarrow_forward
- How does evolution explain the biodiversity of life on eartharrow_forwardMention one significant function of biodiversity.arrow_forwardHow can a large amount of biological diversity protect an ecosystem from environmental damage? Why are less biodiverse ecosystems at risk of suffering serious biological harm if subject to even small changes?arrow_forward
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