Zadanie 1a
(i) Suggest a change at a lower trophic level that could reduce survival of these birds. (ii) Suggest how climate change could affect their survival.
- Materiał graficzny
Biology HL Paper 2, May 2024, TZ2
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 16 zadań z tego arkusza, razem 76 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Evaluating biological evidence and methods (4), Recording and interpreting biological data (3).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
Describe the overall pattern in breeding-pair numbers across the three species.
- Materiał graficzny
Zadanie 1c
(i) Compare and contrast annual survival in species A and B across the 31 years. (ii) Suggest a reason why the species differ in survival.
- Materiał graficzny
Zadanie 1d
(i) State the year of greatest fishing effort. (ii) Describe the relationship between fishing effort and adult survival, using evidence from the record.
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Zadanie 1e
(i) Calculate the percentage increase in prey density from 1985 to 1991. (ii) Evaluate whether the record supports dependence of species B survival on prey density, referring to particular intervals.
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Zadanie 1f
Suggest two explanations for the reported effects of wind conditions, and two for the reported effects of breeding-pair numbers, on eggs and chick survival.
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Zadanie 2
Explain how phloem sap moves from a source to a sink.
Zadanie 3
State which class of organic compounds provides the greatest stored energy per unit mass in the human body.
Zadanie 4a
A model evolutionary history of herbivorous mammals is shown. (i) Identify the taxon most closely related to living species C. (ii) State the type of evolution represented by the branching history.
- Materiał graficzny
Zadanie 4b
Related island birds have evolved different beak shapes and feeding habits. (i) Outline how the differences in beaks could have evolved. (ii) Describe how chromosome number is maintained when a growing bird produces new body cells.
Zadanie 5a
In a hypothetical beetle, dark body (D) is dominant to pale body (d), and broad wings (W) to narrow wings (w). A dark, broad-winged double heterozygote is crossed with a pale, narrow-winged individual. Offspring phenotype | Expected ratio if loci assort…
Zadanie 5b
Researchers rear the beetles in enclosed mesocosms. Explain advantages of mesocosms for investigating their populations and environmental interactions.
Zadanie 5c
Outline how the Hershey–Chase investigation distinguished DNA from protein as the inherited material.
Zadanie 6
(a) Outline anaerobic cell respiration. (b) Describe conditions that allow efficient gas exchange in human lungs.
Zadanie 7
(a) Outline transcription. (b) Describe how nondisjunction can produce Down syndrome. (c) Explain the roles of named hormones in the development and functioning of male and female reproductive systems.
Zadanie 8
(a) Draw and fully label a bacterial cell. (b) Describe barriers that prevent pathogenic bacteria entering the body. (c) Explain how immunity to pathogenic bacteria develops.