What of the following is / are correct about Cycas?
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a
Cycas has characteristic branched stems and pinnate leaves.
b
It is dioecious plant, where male cones and megasporophylls bear on different trees
c
Mycorrhizal associations are commonly found in the roots of Cycas.
d
It has megasporangia without integuments
answer is B.
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Detailed Solution
Roots in some genera have fungal association in the form of mycorrhiza (Pinus), while in some others (Cycas) small specialised roots called coralloid roots are associated with N2- fixing cyanobacteria. The stems are unbranched (Cycas) or branched (Pinus, Cedrus). It has megasporangia with integuments.