About how much of all kinds of vascular plants exhibit mutualistic association between their roots and certain fungi?
Correct answer: C. 95%
- A. 5%
- B. 100%
- C. 95%
- D. A few
Explanation
The correct answer is 95%. Most vascular plants, about 95%, exhibit a mutualistic association with fungi known as mycorrhizae. This relationship is crucial for the plant's nutrient absorption, particularly for phosphorus. Option A (5%) and Option D (A few) greatly underestimate this relationship, while Option B (100%) overstates it, as not all plant species engage in such associations.
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Fungi are mainly multicellular, non-photosynthetic organisms with chitinous cell walls that obtain nutrients by extracellular digestion and absorption. Coverage includes hyphae, mycelium, spores, yeast, moulds, mushrooms, decomposer and parasitic roles, and the differences between fungi, plants and bacteria.
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