Ecosystem Interactions and Biodiversity
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Questions and Answers

What is a characteristic of keystone species, such as tiger sharks, in an ecosystem?

  • They have a high population density.
  • They regulate the population of primary consumers. (correct)
  • They are responsible for pollination in plants.
  • They are the primary producers of the ecosystem.
  • Which of the following is an example of species interaction that affects biodiversity?

  • Honey bees producing nectar for themselves.
  • Humming birds competing with each other for food resources.
  • Tiger sharks pollinating plants.
  • American alligators modifying their surroundings through their food consumption. (correct)
  • What is a consequence of disrupting the food web in an ecosystem?

  • No effect on the population of primary consumers.
  • The elimination of keystone species.
  • An increase in the population of primary consumers. (correct)
  • A decrease in the population of primary consumers.
  • What is a key component of an ecosystem that affects the biodiversity of the ecosystem?

    <p>The amount of water available.</p> Signup and view all the answers

    What is an essential role of honey bees in an ecosystem?

    <p>Pollinating plants and assisting with genetic diversity.</p> Signup and view all the answers

    What is the primary consequence of a keystone species' absence in an ecosystem?

    <p>A significant decline in biodiversity</p> Signup and view all the answers

    What is the key role of sea otters in their ecosystem, as exemplified by the text?

    <p>Serving as a top predator in the nearshore marine ecosystem</p> Signup and view all the answers

    What is a characteristic of keystone species, as mentioned in the text?

    <p>They are a critical component of the local food web</p> Signup and view all the answers

    What is the predicted consequence of honey bees' extinction, according to the text?

    <p>A 50% decline in plant species</p> Signup and view all the answers

    How do wolves contribute to biodiversity conservation, as described in the text?

    <p>By regulating prey populations</p> Signup and view all the answers

    What is the primary effect of beavers' dam-building activity on their ecosystem?

    <p>The creation of ponds and lakes that support other species</p> Signup and view all the answers

    What is the primary focus of Autecology in the study of ecology?

    <p>Study of an individual species of organisms and its population</p> Signup and view all the answers

    What is the term for the study of communities and their interactions in ecology?

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

    Which of the following is an example of a structurally and functionally identifiable ecosystem?

    <p>Mangrove swamp in a delta</p> Signup and view all the answers

    What is the term for the study of the interactions between organisms and their environment?

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

    Which of the following is NOT an example of a geographical region in India?

    <p>The Amazon Rainforest</p> Signup and view all the answers

    What is the term for a species that has a disproportionate impact on its environment and plays a crucial role in maintaining the structure of its ecosystem?

    <p>Keystone species</p> Signup and view all the answers

    Study Notes

    Keystone Species

    • Keystone species have a disproportionate impact on their environment, maintaining the structure of their ecosystem.
    • The absence of a keystone species can lead to significant changes in the ecosystem, potentially causing a cascade of negative effects.

    Biodiversity and Species Interactions

    • Species interactions, such as predation, competition, and mutualism, affect biodiversity.
    • Disrupting the food web in an ecosystem can have cascading effects, altering the populations of various species and potentially leading to instability.

    Ecosystem Components and Biodiversity

    • Honey bees play an essential role in pollination, crucial for the reproduction of many plants, contributing to ecosystem biodiversity.
    • Sea otters, a keystone species, are crucial for maintaining the kelp forest ecosystem through their predation on sea urchins, which in turn allows kelp to thrive.

    Consequences of Keystone Species Absence

    • The absence of a keystone species, like the tiger shark, can disrupt the balance of the ecosystem, affecting various trophic levels.

    Ecological Studies and Concepts

    • Autecology focuses on the study of individual species and their interactions with their environment.
    • Synecology focuses on the study of communities and their interactions within an ecosystem.
    • Ecology is the study of the interactions between organisms and their environment.
    • An example of a structurally and functionally identifiable ecosystem is a tropical rainforest.

    Geographical Regions of India

    • India's geographical regions include the Himalayas, the Indo-Gangetic Plain, the Deccan Plateau, and the Coastal Plains.

    Keystone Species in Ecosystems

    • The text describes the importance of various keystone species in different environments:
      • Tiger sharks in coral reefs
      • Wolves in forests
      • Beavers in wetlands
      • Honey bees in various ecosystems

    Predicted Consequences of Bee Extinction

    • The text predicts that the extinction of honey bees would have a significant impact on agriculture and ecosystems, as they are crucial pollinators.

    Wolves' Role in Biodiversity Conservation

    • Wolves, as keystone species, help maintain biodiversity by controlling prey populations, which in turn allows for a greater diversity of species to thrive.

    Beavers' Impact on Ecosystems

    • Beavers' dam-building activity changes the landscape, creating wetlands that enhance biodiversity and provide habitats for various species.

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    Description

    Explore the interconnectedness of species and their environments. Learn how honey bees, hummingbirds, alligators, and tiger sharks impact their ecosystems and contribute to biodiversity.

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