F215 Module 3: Ecosystems

F215 is split into four different modules. This is the third module and covers the part of the specification labelled 5.3.1/5.3.2

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  • Created by: LMFW
  • Created on: 08-06-11 10:38

1. Which of these is the correct definition of an Ecosystem?

  • The place where an organism lives
  • Any group of living organisms and non-living things occuring together, and the interrelationships between them
  • The role that each species plays in an ecosystem
  • All the populations of different species who live in the same place at the same time, and can interact with each other
  • All the organisms of one species, wo live in the same place at the same time, and can breed together
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2. Which of these is NOT true of Ecosystems?

  • Matter is constantly recycled
  • They can be on a large scale (like the African grassland)
  • Energy is transferred through ecosystems
  • They do not describe areas of a smaller scale (like a small garden pond)
  • They are dynamic

3. An organism that supplies chemical energy to all other organisms is known as a...

  • Decomposer
  • Herbivore
  • Producer
  • Carnivore
  • Consumer

4. Which of these factors is a biotic factor?

  • Water availibility
  • Predation
  • pH
  • Temperature
  • Soil type

5. Two species can occupy exactly the same niche in an ecosystem

  • False
  • True
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Comments

peter

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Your answer to question 16 is wrong

LMFW

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The competitive exclusion principle suggest that if two individuals of different species had exactly the same niche then one would be outcompeted by the other, it would die out and become extinct.

Interspecific competition is competition between individuals of different species and therefore describes the competitive exclusion principle.

lalo

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peter wrote:

Your answer to question 16 is wrong

 no

Matt Heywood

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16 is definitely right. The second option is preservation. They're not the same thing.

Nahida

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16 is right guys!:)

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