Difficulty: Medium

Average Score: 50%

The author mentions 'maize (Zea mays)' primarily in order to

Rationale

cite a species that differs from its wild progenitor in the size of some of its plant structures.

The author mentions 'maize (Zea mays)' to illustrate how domesticated crops can exhibit significant morphological differences compared to their wild ancestors, particularly in terms of plant structure size. This example underscores the extent of human influence on plant evolution through domestication.

A (acknowledge that domesticated crops with certain features likely originated in similar ecosystems) YOUR ANSWER

While the origin of domesticated crops in similar ecosystems is relevant, the author’s primary focus is on the specific differences between maize and its wild progenitor. This choice does not address the distinct morphological changes that maize underwent during domestication.

B (emphasize that domestication of wild plants has resulted in a wide range of now-common food crops) YOUR ANSWER

Although this statement is true, it does not specifically capture the essence of the author's discussion regarding maize. The mention of maize serves more to highlight the specific traits that have changed rather than to make a broader statement about the variety of food crops resulting from domestication.

D (provide evidence that certain traits shared by many domesticated plants are advantageous) YOUR ANSWER

This choice suggests a general advantage of traits in domesticated plants, but it does not focus on the particular differences observed in maize compared to its wild ancestor. The author is more concerned with the specific morphological changes rather than the advantages of traits across all domesticated species.

Conclusion

The author’s reference to 'maize (Zea mays)' specifically illustrates how domestication can lead to notable differences in the size of plant structures compared to wild progenitors. By highlighting maize, the text emphasizes the profound changes that can occur through human cultivation, serving as a concrete example of the broader phenomenon of plant domestication.

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