A) Leptosporangiate
B) Eusporangiate
C) Unisporangiate
D) Mesosporangiate
Correct Answer: A
Solution :
Such a sporangium arises from a single super ficial initial. It divides periclinally into outer and inner components. While the inner cell forms the stalk, the outer gives rise to sporangium proper. In Marattia alata, the sporangia in a sorus may fuse to form a synanjoi.
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