In the Two Species of Lobelia from Mount Kenya Discussed

question 51

Multiple Choice

In the two species of Lobelia from Mount Kenya discussed in the text, L.telekii, which lives on dry rocky slopes, is semelparous, produces many seeds, and has a short life span.L.keniensis, which lives in moist valleys, is iteroparous, produces fewer large seeds, and lives longer.The differences in these two species suggest that their

• A) habitats acted on genetic differences to cause the changes.
• B) genetic differences are not related to their different habitats.
• C) differences are based on environmental factors other than habitat.
• D) differences reflect the plants' range of adaptability, not their genetics.
• E) life history variations are part of the species and not subject to change.

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Definitions:

Incidence Rate

The rate at which new cases of a condition, disease, or event occur in a population over a specified period.

Asbestos Exposure

The inhalation or ingestion of asbestos fibers, which can lead to serious health conditions like mesothelioma or lung cancer.

Multiplicative Scale

A measurement scale where units are exponentially related, often used in contexts where growth or change occurs at constant rates.

Effect Measure Modifier

A variable that alters the magnitude or direction of the association between an exposure and disease outcome.