Crocus and gladiolus are propagated from which underground storage organ?

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Prepare for the Penn State Master Gardener Exam with comprehensive study aids including flashcards and multiple-choice questions. Each question is designed with hints and explanations to ensure successful exam preparation.

Multiple Choice

Crocus and gladiolus are propagated from which underground storage organ?

Explanation:
Both Crocus and Gladiolus propagate from a swollen underground stem called a corm. A corm is a short, vertical underground stem that stores nutrients for the plant and has a dry, papery outer layer. Each growing season a new corm forms to replace or accompany the old one, which is why these plants multiply this way. This differs from tubers, which are swollen roots or stolons (like potatoes); rhizomes, which are horizontal underground stems; and stolons, which are above-ground runners. So the underground storage organ used by both is a corm.

Both Crocus and Gladiolus propagate from a swollen underground stem called a corm. A corm is a short, vertical underground stem that stores nutrients for the plant and has a dry, papery outer layer. Each growing season a new corm forms to replace or accompany the old one, which is why these plants multiply this way. This differs from tubers, which are swollen roots or stolons (like potatoes); rhizomes, which are horizontal underground stems; and stolons, which are above-ground runners. So the underground storage organ used by both is a corm.

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