A) 4 megasporangia on dorsal surface
B) 2 megasporangia on ventral surface
C) 2 megasporangia on dorsal surface
D) 4 megasporangia on ventral surface
Correct Answer: B
Solution :
The female cone axis of Pinus bears a composite structure comprising of megasporophylls. Each megasporophyll consists of a lower bract scale and a large upper ovuliferous scale. The ovuliferous scale bears on its upper (adaxial) surface two ovules (megasporangia) side by side.
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