Which of the following statement regarding gymnosperms is correct?
A
The stems are branched in Cycas.
B
Coralloid roots are associated with 
-fixing algae.
-fixing algae.
C
The gymnosperms are homosporous.
D
None of these.
Text Solution
Verified by ExpertsThe correct answer is:
D
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 
- fixing cyanobacteria. The stems are unbranched (Cycas) or branched (Pinus, Cedrus). The Gymnosperms are heterosporous.
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