Difficulty: Hard

Average Score: 40%

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 a clear example of a domesticated crop that has undergone significant morphological changes compared to its wild ancestor, notably in the size and structure of its kernels and plants. This distinction highlights the effects of domestication on plant traits over time.

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

While the author may touch on the origins of domesticated crops, the primary focus regarding maize is its specific morphological differences rather than a broader statement about ecosystems. This choice does not address the particular traits of maize itself.

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

This option discusses the general outcome of domestication but does not specifically relate to maize. The mention of maize serves to provide a concrete example of how specific traits have changed, rather than to highlight the overall diversity of food crops resulting from domestication.

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

Though certain advantageous traits may be discussed, the primary purpose of mentioning maize is to focus on its distinct differences from its wild counterpart rather than making a general statement about the advantages of traits across various domesticated plants.

Conclusion

The reference to 'maize (Zea mays)' is specifically aimed at showcasing its divergence from its wild progenitor in terms of size and structural characteristics, exemplifying the effects of agricultural selection. This detailed comparison provides insightful evidence on how domestication alters plant morphology, which is crucial for understanding the evolution of cultivated crops.

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