California Landscape Architecture Practice Exam 2025 - Free Landscape Architect License Practice Questions and Study Guide

Question: 1 / 400

Manganese deficiency in plants is indicated by which symptom?

New leaves turning yellow with green veins

Lower leaves turning yellow with green veins

Yellow spots or holes in leaves

Manganese deficiency in plants is predominantly indicated by the presence of yellow spots or holes in the leaves. This symptom arises because manganese plays a critical role in photosynthesis and enzymatic processes within the plant. When there is a deficiency, chlorosis can develop, which may manifest as irregular yellowing and necrotic spots as the affected tissues die off due to insufficient chlorophyll production.

The appearance of holes is also related to how manganese deficiency impacts the plant's ability to maintain cellular integrity, leading to tissue breakdown. This visual symptom notably contrasts with other nutrient deficiencies, where different patterns of leaf discoloration and damage might occur. Understanding this specific sign helps in diagnosing manganese issues in plants effectively, leading to appropriate remedial actions.

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Stunted growth of new leaves

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