Eduprobe
Question:
Pinus seed cannot germinate and established without fungal association. This is because:
It has obligate association with mycorrhizae
It has very hard seed coat
Its seeds contain inhibitors that present germination
Its embryo is immature
Solution:
Correct option is B. It has obligate association with mycorrhizae. Fungus associated with roots of Pinus increased minerals water absorption for the plant by increasing surface area. It also protects the seedling from soil borne disease. Therefore, mycorrhizal association is obligatory for Pinus seed germination. So, the correct answer is 'It has obligate association with mycorrhizae'