Zadanie 2b
Explain why less energy is available at each successive trophic level in this model.
- Materiał graficzny
Transfers of energy and matter
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 75 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 40 z 57 arkuszy w bazie.
Zadania z tego działu: 75 Otwórz w wyszukiwarce z filtrami
Zadanie 28
Which labelled carbon transfer can turn primary production into secondary production? A. A B. B C. C D. D
- Materiał graficzny
Zadanie 28
In an isolated meadow, plants accumulate new biomass and herbivores use some of it for growth. Over the same area and time, which comparison of production rates is expected? A. Primary production exceeds secondary production because part of the consumed carbon…
Zadanie 5
A blue carbon-dioxide indicator becomes yellow when dissolved carbon dioxide accumulates. Identical sealed jars start blue. Which treatment is most likely to retain the blue colour if illumination is sufficient for net photosynthesis? A. An aquatic plant and a…
Zadanie 5b
A model aquatic chain has the following tissue concentrations of a persistent insecticide. Microalgae → herbivorous zooplankton → small fish → fish-eating birds 0.03 ppm →0.36 ppm →2.4 ppm →19.2 ppm (i) Identify the trophic role of the small fish. (ii) Explain…
Zadanie 7
Carbon participates in molecular structures, ecosystem transfers and changes to the global environment. (a) Outline bonding properties that allow carbon to form many different molecules. (b) Describe processes that transfer carbon through an ecosystem. (c)…
Zadanie 7
Consider connections between biological processes at different levels of organization. (a) Outline three properties of energy-storage polysaccharides that make them effective reserves. (b) Describe the transfer of energy along a food chain. (c) Explain why…
Zadanie 8
Biological function depends on coordinated structures and recurring processes. (a) Outline the roles and regulation of progesterone during the menstrual cycle. (b) Describe the polymerase chain reaction. (c) Explain how carbon is recycled through a terrestrial…
Zadanie 26
Which pairing correctly identifies the external energy sources of two autotrophic nutritional modes? A. Photoautotroph: light; chemoautotroph: oxidation of inorganic substances B. Photoautotroph: prey tissue; chemoautotroph: sunlight C. Both: oxidation of…
Zadanie 28
A microorganism fixes carbon dioxide using energy released when it oxidises hydrogen sulfide. Which nutritional category fits this organism? A. Photoheterotroph B. Saprotrophic heterotroph C. Chemoautotroph D. Photoautotroph