Which type of inflorescence has a main axis that continues to grow with flowers borne laterally?

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Study for the Morphology of Flowering Plants Test. Enhance your understanding with multiple-choice questions, complete with explanations. Prepare for your exam!

Multiple Choice

Which type of inflorescence has a main axis that continues to grow with flowers borne laterally?

Explanation:
Indeterminate (racemose) inflorescences have a main axis that keeps growing while flowers form laterally along that axis. Because the apex doesn't terminate in a flower, the pattern keeps extending and adds new blooms toward the tip, making the oldest flowers sit toward the base and the youngest toward the top. This contrasts with determinate (cymose) types, where the first flower forms at the tip and growth stops there, with subsequent flowers arising from lateral buds. So, the description—main axis continuing to grow with flowers borne laterally—fits a racemose inflorescence.

Indeterminate (racemose) inflorescences have a main axis that keeps growing while flowers form laterally along that axis. Because the apex doesn't terminate in a flower, the pattern keeps extending and adds new blooms toward the tip, making the oldest flowers sit toward the base and the youngest toward the top. This contrasts with determinate (cymose) types, where the first flower forms at the tip and growth stops there, with subsequent flowers arising from lateral buds. So, the description—main axis continuing to grow with flowers borne laterally—fits a racemose inflorescence.

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