Practice B4.2 Ecological niches with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A fossil skull shows large, flat molars and reduced canines. What can be inferred about its diet?
Based on this table, which organism is a facultative anaerobe?
| Organism Type | Growth in Presence of O2 | Growth in Absence of O2 |
|---|---|---|
| Organism A | Yes | No |
| Organism B | Yes | Yes |
| Organism C | No | Yes |
Which statement about archaea nutrition is correct?
Which comparison between oxygen requirements is correct?
Which of the following statements best distinguishes a species’ fundamental niche from its realized niche?
Which dental trait indicates a likely omnivorous diet in a hominid?
Which of the following organisms cannot survive in the presence of oxygen?
A planktonic protist that photosynthesizes during the day but engulfs bacteria at night is best described as a:
Which of the following characterizes Holozoic nutrition?
Two species of birds feed on similar insects but forage at different heights in the same tree. This difference in behavior suggests they: