Biological Diversity and Ecosystem Interactions
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Questions and Answers

What defines commensalism in ecological interactions?

  • Both organisms benefit from the relationship.
  • One organism benefits while the other is harmed.
  • Both organisms are harmed in the relationship.
  • One organism benefits while the other is neither harmed nor benefited. (correct)

    • Which scenario best illustrates mutualism?

  • Two species competing for the same food source.
  • A tape worm living in a human's intestine.
  • Ants living in a tree providing protection to the tree. (correct)
  • A bird building its nest in a tree.

    • What happens during interspecies competition?

  • Two species vie for the same resource, leading to limited availability for each. (correct)
  • Resources are evenly divided among the competing species.
  • Two species benefit from sharing resources.
  • One species benefits at the expense of the other.

    • Which of the following correctly describes heritable characteristics?

    <p>Traits that are passed down from generation to generation.</p> Signup and view all the answers

    Which characteristic serves as an example of discrete variation?

    <p>Eye color being either blue or not blue.</p> Signup and view all the answers

    What effect does resource partitioning have on species interaction?

    <p>Species separate the resources to minimize competition.</p> Signup and view all the answers

    What concept did Charles Darwin emphasize with regards to natural selection?

    <p>The environment selects individuals that can adapt to changes.</p> Signup and view all the answers

    What characterizes continuous variation in traits?

    <p>Traits that display a range of forms across a spectrum.</p> Signup and view all the answers

    What is the primary focus of biological diversity?

    <p>The variety of species and ecosystems on Earth</p> Signup and view all the answers

    Which term describes differences within a species?

    <p>Genetic Diversity</p> Signup and view all the answers

    What is the significance of the species name in the Linnaeus classification system?

    <p>It is the most specific identifier for a species</p> Signup and view all the answers

    Which of the following statements best describes symbiosis?

    <p>It refers to the interdependence of different species.</p> Signup and view all the answers

    Which of the following best defines a community in ecological terms?

    <p>Populations of different species living together</p> Signup and view all the answers

    What is the term for the union of male and female gametes to form a zygote?

    <p>Fertilization</p> Signup and view all the answers

    How does genetic diversity contribute to the survival of a species?

    <p>It represents the potential for adaptation over time</p> Signup and view all the answers

    Which characteristic is affected by environmental interactions in addition to being heritable?

    <p>Height</p> Signup and view all the answers

    What reproductive structure in plants is responsible for producing and storing pollen?

    <p>Anther</p> Signup and view all the answers

    Which of the following is NOT an abiotic factor affecting an organism's survival?

    <p>Plants</p> Signup and view all the answers

    Which of the following is a disadvantage of sexual reproduction?

    <p>Highly energy-consuming</p> Signup and view all the answers

    Which kingdom in the 5 Kingdom Classification System includes bacteria?

    <p>Monera</p> Signup and view all the answers

    In plants, what is the transferring of pollen from the anther to the stigma called?

    <p>Pollination</p> Signup and view all the answers

    Which type of reproduction results in genetically identical offspring?

    <p>Asexual reproduction</p> Signup and view all the answers

    What is the process called where one plant's pollen is carried to the stigma of another plant?

    <p>Cross pollination</p> Signup and view all the answers

    Which of the following is NOT a form of asexual reproduction?

    <p>Genetic mixing</p> Signup and view all the answers

    What is the main characteristic of binary fission?

    <p>It results in two identical individuals.</p> Signup and view all the answers

    Which of the following organisms primarily reproduces through budding?

    <p>Yeast</p> Signup and view all the answers

    What is a disadvantage of asexual reproduction?

    <p>The lack of variation can lead to vulnerability.</p> Signup and view all the answers

    How do runners contribute to vegetative reproduction?

    <p>They are horizontal stems that produce new plants.</p> Signup and view all the answers

    Which type of asexual reproduction creates structures similar to seeds?

    <p>Spore Production</p> Signup and view all the answers

    What role does DNA play in genetics?

    <p>It serves as the blueprint for inherited traits.</p> Signup and view all the answers

    Which of the following is an example of vegetative reproduction?

    <p>Taking a cutting of a plant to root it.</p> Signup and view all the answers

    Which of the following components of DNA pairs with adenine?

    <p>Thymine</p> Signup and view all the answers

    Study Notes

    Commensalism in Ecological Interactions

    • One species benefits, while the other remains unaffected.

    Mutualism

    • Both species mutually benefit from the interaction.

    Interspecies Competition

    • Two or more species compete for the same resources, negatively impacting both.

    Heritable Characteristics

    • Traits passed from parents to offspring through genes.

    Discrete Variation

    • Traits with distinct categories, like blood type or flower color.

    Resource Partitioning

    • Species divide resources, reducing competition and promoting coexistence.

    Natural Selection

    • Individuals with advantageous traits are more likely to survive and reproduce.

    Continuous Variation

    • Traits exist on a spectrum, like height or weight.

    Biological Diversity

    • The variety of life on Earth, encompassing species, genes, ecosystems.

    Intraspecific Variation

    • Differences within a species, contributing to genetic diversity.

    Species Name in Linnaeus Classification System

    • Consists of two parts: genus and specific epithet, uniquely identifying a species.

    Symbiosis

    • Any close and long-term interaction between two species, regardless of effect.

    Community in Ecology

    • Interacting populations of different species within a given area.

    Fertilization

    • Union of male and female gametes, forming a zygote, initiating development.

    Genetic Diversity and Survival of Species

    • Increased variation increases adaptability to changing environments.

    Phenotype

    • An organism's observable characteristics, shaped by genetics and environment.

    Anther in Plants

    • The pollen-producing structure of a flower.

    Abiotic Factor

    • Non-living component of an ecosystem, like temperature or light.

    Disadvantage of Sexual Reproduction

    • Requires finding a mate and may be less efficient in stable environments.

    Kingdom with Bacteria

    • Monera

    Pollination

    • Transferring pollen from the anther to the stigma in plants.

    Asexual Reproduction

    • Reproduction without the union of gametes, producing genetically identical offspring.

    Cross-Pollination

    • Transferring pollen from one plant to the stigma of another.

    Asexual Reproduction Methods

    • Budding, binary fission, vegetative reproduction, fragmentation, and spore formation.

    Binary Fission

    • Single-celled organisms divide into two identical cells..

    Budding Organisms

    • Hydra, yeast

    Disadvantage of Asexual Reproduction

    • Reduced genetic diversity, making offspring susceptible to environmental changes.

    Runners in Vegetative Reproduction

    • Horizontal stems that grow along the ground, producing new plants.

    Bulbils

    • Specialized structures resembling seeds, formed on a parent plant for asexual reproduction.

    Role of DNA in Genetics

    • Contains genetic information, passed down through generations, influencing traits.

    Vegetative Reproduction Example

    • Cuttings from a parent plant, rooting to produce new clones.

    Adenine's Pairing Component in DNA

    • Thymine

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    Related Documents

    Biological Diversity PDF

    Description

    Explore the concepts of biological diversity, abiotic factors, and the interdependence of organisms within ecosystems. This quiz covers symbiotic relationships like commensalism and mutualism, highlighting their significance in ecological balance. Test your knowledge on how various species coexist and interact within their environments.

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