These are all gymnosperms

Psilotum, Pinus, Cycas and Gnetum

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Nepbrolepis, Cycas, Pinus and Gnetum

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Cycas, Pinus, Gnetum and Ephedra

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None of these

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Solution

The correct option is C Cycas, Pinus, Gnetum and Ephedra
The microspores also called pollen grains in case of gymnosperms and angiosperms are the initial stages of male gametophyte. The microspores of Cycas, Pinus, and Ephedra are built on the same architectural pattern. Their development can be studied in two stages. The germination of pollen grains starts in situ. So, the correct option is "C" (Cycas, Pinus, Gnetum, and Ephedra).

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