A) its embryo is immature.
B) it has obligate association with mycorrhizae.
C) it has very hard seed coat.
D) its seeds contain inhibitors that present germination.
Correct Answer: B
Solution :
Fungus associated with roots of pinus increases minerals & water absorption for the plant by increasing surface area and in turn fungus gets food from plant. Therefore, mycorrhizal association is obligatory for pinus seed germination.
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