Question

Consider the following statements about vesicular arbuscular mycorrhizae.
a. They are phycomycetous endomycorrhiza.
b. Their inoculations increase production in several crops.
c. They are absent in rice fields which are flooded with water.
Of these statements.

• A. $1,2$ and $3$ are correct
• B. $1$ and $2$ are correct
• C. $2$ and $3$ are correct
• D. $1$ and $3$ are correct

Answer 1

The correct option is A $1,2$ and $3$ are correct

Arbuscular mycorrhizal fungi are obligate symbionts with most terrestrial plants. They improve plant nutrition, particularly phosphate acquisition. In exchange, the fungi obtain photosynthetically fixed carbon. Flooded rice reduced the survival of infected propagules of arbuscular mycorrhizal fungi. The flooded rice soils were used to grow upland crops, high colonization levels could be obtained, especially on soybean. Vesicular-arbuscular mycorrhizae may be able to increase crop yields while reducing fertilizer and energy inputs.

So, the correct answer is option A.