Zadanie 4b
(i) Define intraspecific competition. (ii) Explain how this competition can affect biological fitness over generations.
Relative fitness and reproductive success
Explain how differences in adaptation influence survival and the contribution of alleles to future generations.
Tę umiejętność sprawdza 20 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 20 Otwórz w wyszukiwarce z filtrami
Zadanie 4d
Explain how predation can produce the observed evolutionary change.
- Materiał graficzny
Zadanie 4b
Suggest an advantage of the quieter male strategy.
- Materiał graficzny
Zadanie 4c
Suggest an evolutionary advantage of retaining both male forms in the population.
- 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 14
A crop is modified to survive treatment with a particular herbicide. Discuss potential benefits and risks of growing this herbicide-resistant crop.
Zadanie 16d
Discuss benefits and risks of controlling disease-vector mosquitoes with DDT.
Zadanie 18
Two descendant bird lineages evolve different feeding structures. Which statements can explain this divergence? I. Heritable beak variation was available in the ancestral population. II. Beak wear acquired by an individual is necessarily inherited by its…
- Materiał graficzny
Zadanie 19
Under persistent selection, what generally distinguishes individuals with higher biological fitness? A. They must avoid all competition throughout life B. They produce genetically identical offspring exclusively C. They contribute more surviving offspring to…
Zadanie 3a
Explain how natural selection could increase the frequency of resistance in the bacterial population.
Zadanie 7b
Explain how a food-provisioning behaviour of this kind could evolve.
Zadanie 8a
(i) Identify the relationship between migration distance and plumage darkness. (ii) Suggest two explanations for variation in plumage other than mate choice.
- Materiał graficzny
Zadanie 8b
Explain how natural selection can change behaviour in a population.
- Materiał graficzny
Zadanie 16
A heritable variant that permits adult digestion of a particular dietary sugar becomes more frequent over many generations after that food becomes common. Which explanation is consistent with evolution? A. Eating the food directs every individual to produce…
Zadanie 18
In a stable environment, a heritable trait lowers survival and the number of offspring produced. What does natural selection tend to do over generations? A. Decrease the trait’s frequency B. Ensure that every individual acquires a beneficial mutation C. Pass…
Zadanie 8
(a) Outline how new heritable traits can arise and become more common in a population over time. (b) Explain how polyploidy can cause the abrupt origin of a new plant species. (c) Suggest advantages of scientific species names.
Zadanie 8
(a) Outline how new heritable traits can arise and become more common in a population over time. (b) Explain how polyploidy can cause the abrupt origin of a new plant species. (c) Suggest advantages of scientific species names.
Zadanie 15
Why can repeated antibiotic use increase the frequency of resistance in a bacterial population? A. The antibiotic purposefully gives every bacterium a useful mutation B. Natural selection changes the antibiotic molecule into food C. Susceptible bacteria are…
Zadanie 15
Why can repeated antibiotic use increase the frequency of resistance in a bacterial population? A. The antibiotic purposefully gives every bacterium a useful mutation B. Natural selection changes the antibiotic molecule into food C. Susceptible bacteria are…
Zadanie 17
A constructed survey finds that pale moths become more frequent after soot deposits on tree bark decline. Which explanation is consistent with natural selection? A. Every dark moth changes its inherited colour in response to cleaner air B. Pale moths become…