A) 2 microsporangia on abaxial side of microsporophyll
B) 4 microsporangia on abaxial side of microsporophyll
C) 2 microsporangia on adaxial side of microsporophyll
D) 4 microsporangia on adaxial side of microsporophyll
Correct Answer: A
Solution :
The male cone of Pinus is shortly stalked and consists of an elongated central axis bearing a small spirally arranged and closely fitting scale like microsporophyll. It bears two microsporangia or pollen sacs as swelling on the abaxial (lower) surface of microsporophyll.
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