Zadanie 1e
Using the evidence, discuss whether killing hawks would improve the long-term sustainability of the woodland and the released quail.
- Materiał graficzny
Populations and communities
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 49 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 28 z 57 arkuszy w bazie.
Zadania z tego działu: 49 Otwórz w wyszukiwarce z filtrami
Zadanie 1a
(i) Identify the overall relationship between extract concentration and root length. (ii) Compare and contrast the effects on shoot height and above-ground biomass. (iii) Calculate the percentage change in total biomass from control to 12 mg mL⁻¹.
- Materiał graficzny
Zadanie 1d
Discuss whether these results support the hypothesis that chemical effects on other plants or on soil microbes help an invasive plant establish.
- Materiał graficzny
Zadanie 5b
Distinguish parasitism from mutualism and give one example of each.
Zadanie 5c
Explain how competition within a species contributes to natural selection.
Zadanie 13
A red fox (Vulpes vulpes) and a European rabbit (Oryctolagus cuniculus) occupy the same meadow. Which grouping necessarily includes both organisms there? A. One species B. One population C. One genus D. One ecological community
Zadanie 26
A model coastal mammal population is regulated by density-dependent factors. Which explanation best fits its later plateau? A. Crowding increases parasite transmission and limits further population growth B. A volcanic eruption occurs at exactly the same time…
- Materiał graficzny
Zadanie 26
In a lichen, a fungus provides a protected setting and mineral access, while its photosynthetic partner supplies organic compounds. How is this interaction classified? A. Competition within one species B. Mutualism between different species C. Parasitism…
Zadanie 26
Which quantity can a mark–release–recapture estimate using the Lincoln index provide? A. The number of woodlice belonging to one population in a meadow B. The total number of plant species across a continent C. The precise locations of every rooted plant D.…
Zadanie 27
A cover crop releases compounds that suppress germination of nearby plants. What agricultural use could follow from this allelopathic effect? A. Replacing all mineral nutrients with the released compounds B. Developing a treatment that reduces weed…