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DP IB Biology: SL

Topic Questions

Home / IB / Biology: SL / DP / Topic Questions / 4. Ecology / 4.1 Species, Communities, Ecosystems & Energy Flow / Multiple Choice: Paper 1


4.1 Species, Communities, Ecosystems & Energy Flow

Question 1

Marks: 1

Which is the correct definition for a species?

  • A group of organisms which look similar.

  • A group of organisms with similar characteristics.

  • A group of organisms which can interbreed to produce fertile offspring.

  • A group of living things.

Choose your answer
  
Key Concepts
Species

Question 2

Marks: 1

Euglena is an autotroph.

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Identify, from the diagram, the feature which indicates this is an autotrophic organism.

  • Nucleolus

  • Chloroplast

  • Contractile vacuole

  • Mitochondria

Choose your answer
  

Question 3

Marks: 1

Which option correctly lists some abiotic features of an ecosystem?

  • Mineral ions, light intensity, temperature

  • Competition, predation

  • pH, producers, mineral ions

  • Wind speed, decomposition, mineral ions

Choose your answer
  
Key Concepts
Ecosystems

Question 4

Marks: 1

Identify the main energy transfers carried out by the organisms in the food web below:

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  Grass Rabbit
A light → chemical chemical → light
B chemical → light kinetic →  heat
C light → heat chemical → thermal
D light → chemical chemical → kinetic
    Choose your answer
      

    Question 5

    Marks: 1

    A simple aquatic mesocosm is shown below

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    Why is A an important component of the mesocosm?

    • A provides protection for the primary consumers from predators.

    • A converts heat energy to chemical energy.

    • A provides carbohydrates and oxygen to support the mesocosm.

    • A helps to maintain a stable temperature.

    Choose your answer