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A region is warm throughout the year, receives frequent heavy rain and supports very high species diversity despite heavily leached soils. Which biome fits? A. Arctic tundra B. Tropical rainforest C. Boreal coniferous forest D. Cold desert
Four representative biome climates are placed on the model diagram. Which best fits a temperate forest? A. A B. B C. C D. D
A leaf-mimicking insect has a flattened leaf-shaped body and remains motionless among foliage when threatened. Which adaptation categories are illustrated? A. Metabolic and reproductive B. Structural and behavioural C. Physiological and nutritional only D.…
A bacterium grows using oxygen when it is available but can also grow through anaerobic metabolism. How is it classified? A. An obligate aerobe B. A facultative anaerobe C. An obligate anaerobe D. An organism that cannot respire
A young epiphytic fern establishes on a high rainforest branch. What is its main advantage from this location? A. It receives sugars directly through the host’s phloem B. It accesses more light than seedlings on the shaded forest floor C. It avoids needing…
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…
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…
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.…
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…
A model plant releases a compound that suppresses germination of neighbouring species. Which term describes this chemical effect on competitors? A. Allelopathy B. Intraspecific courtship C. Mutualistic pollination D. Pathogenic infection by a virus