A2 OCR BiologyUNIT 2 – Module 3Ecosystems – Revision QuizTotal: ____ / 50____ %Scan this QR code with yoursmartphone to ta...
1. Define the term population (1)............................................................................................
8. Name three types of pyramid that can be used to represent a foodchain (3).................................................
14.What term is used to describe the species that first colonise a newhabitat? (1)...........................................
22.Define the term carrying capacity (2).....................................................................................
28.What are the three principals for managing large scale timberproduction (3)...............................................
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A2 OCR Biology - Unit 2 Module 3 Revision Test

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A2 OCR Biology - Unit 2 Module 3 Revision Test

  1. 1. A2 OCR BiologyUNIT 2 – Module 3Ecosystems – Revision QuizTotal: ____ / 50____ %Scan this QR code with yoursmartphone to take you the relevantsection of mrexham.com
  2. 2. 1. Define the term population (1)..........................................................................................................................................................................................................................................2. Define the term community (1)..........................................................................................................................................................................................................................................3. What term would you use to define the role each species plays inan ecosystem? (1).....................................................................................................................4. List three abiotic factors that can affect an ecosystem (2)..........................................................................................................................................................................................................................................5. What type of organisms feed on waste material or deadorganisms? (1).....................................................................................................................6. What term describes the level at which an organism feeds in afood chain? (1).....................................................................................................................7. Where does all the energy in a food chain initially come from? (1).....................................................................................................................
  3. 3. 8. Name three types of pyramid that can be used to represent a foodchain (3)...............................................................................................................................................................................................................................................................................................................................................................9. What units do you use for productivity? (1).....................................................................................................................10.Define the term Net Primary Productivity (2)..........................................................................................................................................................................................................................................11.Give three ways to improve primary productivity? (3)...............................................................................................................................................................................................................................................................................................................................................................12.Give two ways of improving secondary productivity? (2)..........................................................................................................................................................................................................................................13.Define the term succession (1).....................................................................................................................
  4. 4. 14.What term is used to describe the species that first colonise a newhabitat? (1).....................................................................................................................15.What term is used to describe the final stage of succession? (1).....................................................................................................................16.Name three plants that are involved in sand dune succession (3)..........................................................................................................................................................................................................................................17.What is a saprotroph (1).....................................................................................................................18.What is the name of the nitrogen fixing bacteria that live in rootnodules? (1).....................................................................................................................19.What type of relationship do they have with the plant? (1).....................................................................................................................20.What type of bacteria cause nitrification? (1).....................................................................................................................21.What process is it when the ammonium gets converted tonitrites? (1).....................................................................................................................
  5. 5. 22.Define the term carrying capacity (2)...............................................................................................................................................................................................................................................................................................................................................................23.Name two techniques used to manage small scale timberproduction (2)..........................................................................................................................................................................................................................................24.What type of organisms tend to adopt the r-strategy forpopulation growth?(1).....................................................................................................................25.What happens at the log phase of population growth (2)..........................................................................................................................................................................................................................................26.Define the term intraspecific competition (1).....................................................................................................................27.What idea did Gause form about interspecific competition (1)..........................................................................................................................................................................................................................................
  6. 6. 28.What are the three principals for managing large scale timberproduction (3)...............................................................................................................................................................................................................................................................................................................................................................29.Give three examples of management strategies used inconservation (3)...............................................................................................................................................................................................................................................................................................................................................................30.Give two ways the human population has threatened biodiversity(2)..........................................................................................................................................................................................................................................31.Give the three species introduced by humans to the Galapagosislands (3)...............................................................................................................................................................................................................................................................................................................................................................END OF TEST

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