Zadanie 6, Paper 2, listopad 2025, TZ3, Biologia IB SL
Wzorowane na: Biology SL Paper 2, November 2025, TZ3, pytanie 6. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Zadanie
Polecenie
Nectar-feeding insects depend on flowering plants and can influence their evolution.
(a) Outline links between the properties of glucose and its uses.
(b) List human activities that threaten insect pollinators.
(c) Explain how natural selection can produce insect-pollinated flowers over many generations.
One additional mark is available for clear, concise construction of the complete response.
Korepetytor AI
Nie wiesz, jak ruszyć? Korepetytor zna to zadanie i poprowadzi Cię krok po kroku, bez gotowca.
3 rozmowy · bez karty · Zaloguj się
Sprawdź się
Odpowiedz i oceń, jak poszło. Klucz odsłoń dopiero, gdy masz swoją odpowiedź.
Jak poszło Ci z tym zadaniem?
Wybierz ocenę: zapamięta ją ta przeglądarka, a z darmowym kontem zobaczysz ją na każdym urządzeniu.
Pokaż rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
(a) Maximum5:
Glucose dissolves in water, enabling transport in body fluids. ✔
Glucose is oxidized during respiration to support ATP production. ✔
Glucose is a source of chemical energy. ✔
The resulting ATP supports work such as muscle contraction or active transport. ✔
Condensation can build glucose into polymers for storage. ✔
Glucose can form starch, glycogen or cellulose. ✔
Suitable glucose polymers can be hydrolysed to release glucose for energy metabolism. ✔
(b) Maximum3:
Pesticide or insecticide use. ✔
Urbanization. ✔
Habitat loss or conversion, including intensive monoculture. ✔
Herbicide use or removal of flowering weeds that provide food. ✔
Introduction of non-native species. ✔
(c) Maximum7:
Individuals within a species show variation. ✔
Mutation produces new alleles. ✔
Meiosis and sexual reproduction produce new allele combinations. ✔
A relevant floral trait could be colour, scent, sticky pollen or a structure aiding insect contact. ✔
Environmental conditions or competition for pollinators create selection pressures. ✔
A favourable floral trait attracts more suitable insects. ✔
Plants with it are more likely to be pollinated and reproduce. ✔
They pass on relevant alleles or heritable combinations. ✔
Those alleles increase in frequency over generations. ✔
Diverging populations may eventually become reproductively isolated or form new species. ✔
Construction:1 mark for clear, concise communication across the response.
Schemat punktowania
Individual content caps:5,3,7. Maximum15 content marks plus1 independent construction mark, total16. Part(c):reproductive success must be mentioned for its point; survival alone does not substitute.
Umiejętności w zadaniu
- Pressures behind declining biodiversityĆwicz podobne
- Natural selection explaining evolutionary changeĆwicz podobne
- Simple sugars and their biological rolesĆwicz podobne
- Generating the variation available to selectionĆwicz podobne
- Inheritance as a requirement for selection responseĆwicz podobne
- Relative fitness and reproductive successĆwicz podobne
- Storing glucose in starch and glycogenĆwicz podobne