Answer:
The correct answer would be option B.
Explanation:
Coniferous trees carry both male and female sporophylls cones on the same mature sporophyte mostly. Conifers are monoecious plants because the bear both male and female cones such as pines. Pines, generating 2 different types of spores: female megaspores and male microspores.
Male cones are smaller in comparison of female cones. Scale present in a male cone contains the pollen that can reach to a female cone to make a egg or seed.
Thus, the correct answer is option b.