Question
Which one of the following is considered important in the development of seed habit?
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Dependent sporophyte
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Heterospory
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Haplontic life cycle
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Free-living gametophyte
Solution
B.
Heterospory
Heterospory is the production of spores of two different sizes and of two different sizes and of two different development patterns. Heterospory is an expression sex determining spores of the plant. It is the most important evolutionary development in the vascular plants because it has ultimately lead to seed development, eg, Selaginella, Salvinia,Azolla, etc.
