Question

The heterosporous pteridophytes show certain characteristics which are precursor to the seed habit in gymnosperms explain

Answer 1

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A heterosporous life history occurs in some pteridophytes and in all seed plants. It is characterized by morphologically dissimilar spores produced from two types of sporangia: microspores, or male spores, and megaspores (macrospores), or female spores.

Answer 2

Development of Seed Habit

Explanation:

• Seed habit is a evolutionary pattern in vascular plants where stripped megasporangium got secured by a vascular integument and consequently a seed was formed
• These telomes intertwined with one another to shape a vascularized lobed integument
• In early plants telomes around the sporangia were incompletely intertwined and had no micropyle  
• Heterospory is a declaration of sex deciding procedure of the plants
• It is the most important evolutionary advancement in the vascular plants since it at last prompts the seed improvement