Zadanie 1a
Explain how poor copper availability in soil can lead to copper deficiency in a sheep.
- Materiał graficzny
Biology SL Paper 1B, Specimen 2025
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 13 zadań z tego arkusza, razem 18 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (3), Evaluating biological evidence and methods (2), Planning a biological investigation (2).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
Deduce, with a reason, whether acidifying fertilizer or lime is more likely to promote copper deficiency in this model.
- Materiał graficzny
Zadanie 1c
Copper-deficient sheep show more infections and a weaker vaccine response. Suggest a role of copper in the body.
- Materiał graficzny
Zadanie 1d
(i) State one soil pH at which phosphorus deficiency is predicted. (ii) List two biologically important substances containing phosphorus.
- Materiał graficzny
Zadanie 2a
A student prepares to examine a leaf section using a light microscope. Suggest a reason for beginning with a low-power objective.
Zadanie 3a
Outline why temperature is the independent variable.
Zadanie 3b
Identify the temperature with the greatest overall population growth rate during the investigation.
Zadanie 3c
Explain how temperature can affect population growth in this plant.
Zadanie 3d
Suggest how the reliability of the investigation could be improved.
Zadanie 4a
State the genus name.
Zadanie 4b
Outline the morphological concept of a species.
Zadanie 4c
Suggest how further evidence could test whether the fish belong to one interbreeding population.
Zadanie 4d
Suggest an adaptive benefit of a striking body pattern.