Select the correct pattern of arrangement of reproductive structures for gymnosperms.

Options

A. spores`to`Sporophyll`to`sporangia`to`strobili
B. spores`to`sporangia`to`sporophylls`to`strobili
C. sporangia`to`sporophylls`to`spores`to`strobili
D. spores`to`sporangia`to`strobili`to`sporophylls

Answer

B

Explanation

Gymnosperms are heterosporous, i.e, produce two different kinds of spores- the male (microspores) and the female (megaspores). The spores are borne inside the sporangia. The two types of sporangia (microsporangiaand megasporangia) are borne on special leaf-like structures, called microsporolylls(=stamens) andmegasporoplylls (=carpels) respectively. the sporophylls are usually aggregated in the form of compact structres called cones or strobili the cones are generally unisexual, i.e., the male cones are microsporangiate (pollen cones) and the female cones are megasporangiate (seed cones).