Question

Which of the following statements is not related to mycorrhiza?

(a) Many members of genus Glomus forms mycorrhiza

(b) Fungal symbiont absorbs nitrogen

(c) Plants show resistance to root-borne pathogens

(d) There is an overall increase in plant growth and development

This question was posed to me during an interview for a job.

My question is taken from Microbes as Biofertilizers in chapter Microbes in Human Welfare of Biology – Class 12

Answer 1

Right option is (b) Fungal symbiont absorbs nitrogen

Easiest explanation: Fungi are known to form symbiotic associations with plants known as mycorrhiza. Many members of genus Glomus form mycorrhiza. The fungal symbiont absorbs phosphorous from the soil and passes it on to the plant. Plants having such associations show resistance to root-borne pathogens and an overall increase in plant growth and development.