Energy Flow in Ecosystems
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Questions and Answers

What is the final community in ecological succession called?

  • Pioneer community
  • Transition community
  • Intermediate community
  • Climax community (correct)

Where does primary ecological succession occur?

  • In a place with excessive human interference
  • In a place where life once existed and was destroyed
  • In a place where only small plants exist
  • In a place where life never existed before (correct)

How does deforestation impact an ecosystem?

  • Reduces the need for pollination
  • Promotes the growth of larger species
  • Leads to habitat loss for various species (correct)
  • Increases the variety of species present

What can happen due to the introduction of exotic species into an ecosystem?

<p>Disruption of local food chains (A)</p> Signup and view all the answers

What process occurs when a substance accumulates inside an organism and causes problems?

<p>Bioaccumulation (C)</p> Signup and view all the answers

What is the ultimate source of energy for our planet?

<p>Sun (A)</p> Signup and view all the answers

What is the main cause of species extinction mentioned in the text?

<p>Human interference in food webs (B)</p> Signup and view all the answers

Which process allows the Sun's energy to be captured and transformed into chemical energy by certain beings?

<p>Photosynthesis (C)</p> Signup and view all the answers

Why is there a limit to the number of trophic levels in a food chain?

<p>Because energy is lost as heat and decreases at each level (B)</p> Signup and view all the answers

In what form is energy lost in activities like breathing, excretion, and locomotion?

<p>Lost as heat (B)</p> Signup and view all the answers

Which type of organisms are responsible for recycling organic matter in ecosystems?

<p>Decomposers (A)</p> Signup and view all the answers

What is the term used to describe the cycle through which water passes from a liquid state to a gaseous state and back?

<p>Water cycle (B)</p> Signup and view all the answers

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