What is the relationship between Pinus seeds and mycorrhizae?

What is the relationship between Pinus seeds and mycorrhizae?
  1. Pinus seeds do not need mycorrhizae to germinate
  2. Pinus seeds can establish without the presence of mycorrhizae
  3. Pinus seeds have a facultative association with mycorrhizae
  4. Pinus seeds have an obligate association with mycorrhizae

Solution

Pinus seeds "cannot germinate and establish without the presence of mycorrhizae," which means they have an obligate association with mycorrhizae.

Asked in: NCERT

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