Question

select the best answer for the question.

1. how do endophytes affect grazing animals?

a. endophytes that produce toxins can be poisonous to grazing animals.
b. endophytes pull nutrients from the soil, making plants more nutritious for grazing animals.
c. endophytes fix nitrogen from the air, making plants more nutritious for grazing animals.
d. endophytes are poisonous to plants, depriving grazing animals of forage.
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Explanation:

• Option A: Some endophytes produce toxins (e.g., in certain grasses), which can be harmful to grazing animals when they consume the infected plants.
• Option B: Endophytes are symbiotic with plants, not nutrient - pullers from soil for plant nutrition in this way.
• Option C: Nitrogen - fixing is done by rhizobia (bacteria associated with legumes), not typical endophytes.
• Option D: Endophytes are often mutualistic or can be neutral to plants; they don't poison plants to deprive grazing animals of forage.

Answer:

A. Endophytes that produce toxins can be poisonous to grazing animals.