Multiple Choice
Which statement best compares the mode of nutrition in fungi to that of other organisms?
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29. Fungi
Fungi
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How do mycorrhizal fungi benefit plants?
A
They convert atmospheric nitrogen directly into amino acids for the plant.
B
They provide plants with energy through photosynthesis.
C
They protect plants from herbivores by producing toxins.
D
They increase the absorption of water and essential minerals from the soil.
Verified step by step guidance1
Understand the role of mycorrhizal fungi: These fungi form a symbiotic relationship with plant roots, where both organisms benefit. The fungi extend the plant's root system, increasing its ability to absorb nutrients and water.
Clarify the incorrect options: Mycorrhizal fungi do not convert atmospheric nitrogen directly into amino acids. This process is typically performed by nitrogen-fixing bacteria, not fungi.
Clarify another incorrect option: Mycorrhizal fungi do not provide energy through photosynthesis. Photosynthesis is a process performed by plants and some algae, not fungi.
Address the third incorrect option: Mycorrhizal fungi do not produce toxins to protect plants from herbivores. Their primary role is nutrient and water absorption, not defense mechanisms.
Conclude with the correct answer: Mycorrhizal fungi benefit plants by increasing the absorption of water and essential minerals from the soil, which enhances plant growth and health.
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