Question

Mycorrhizae are associated with .............

• A. Anacardiaceae
• B. Orchidaceae
• C. Both of the above
• D. None of the above

Answer 1

The correct option is B Orchidaceae

The Orchidaceae is one of the largest families in the plant kingdom, with more than 20,000 species identified. The diversity is perhaps because that at some point in their life cycle all orchids are reliant upon mycorrhizal fungi. Whether they are chlorophyllous or achlorophyllous as adults, all orchids have a stage, where they are non-photosynthetic and therefore dependent on external sources of nutrients. In the vast majority of cases, it is just the seedling stage that is obligately mycorrhizal.

Hence the correct option is B.