Populations in Ecosystems QP.pdf - Q1.The graph shows how...

This preview shows page 1 - 3 out of 7 pages.

Page 2Q1.The graph shows how gross productivity and biomass in an area changed with time in thesuccession from bare soil to mature woodland.(a)(i)Suggest appropriate units for gross productivity................................................................................................................(1)(ii)Explain the decrease in gross productivity as the woodland matures............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(2)(b)Use your knowledge of succession to explain the increase in biomass during thefirst 20 years.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................PhysicsAndMathsTutor.com
Page 3................................................................................................................................................................................................................................................[Extra space]................................................................................................................................................................................................................................................................................................................................................(3)(c)Use the information in the graph and your knowledge of net productivity to explainwhy biomass shows little increase after 100 years.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(2)(d)Suggestonereason for conserving woodlands.........................................................................................................................................................................................................................................................................................................................................................................(1)(Total 9 marks)Q2.(a)On islands in the Caribbean, there are almost 150 species of lizards belonging to thegenusAnolis. Scientists believe that these species evolved from two species foundon mainland USA. Explain how the Caribbean species could have evolved.(6)(b)Anolis sagreiis a species of lizard that is found on some of the smallest Caribbeanislands. Describe how you could use the mark-release-recapture method to estimatePhysicsAndMathsTutor.com

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 7 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
Marklevitz

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture