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  4. Which one of the following pairs of plants are not seed producers ?

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Q. Which one of the following pairs of plants are not seed producers ?

AIPMTAIPMT 2003Plant Kingdom

Solution:

Seed producing plants belong to spermatophyta. It includes gymnosperms and angiosperms. Seed habit or seed formation originated in gymnosperms. It requires the retention of megasporangium or the only on the parent plant and non-shedding of megaspore, development of integument and in site formation of female gametophyte. All these features developed in gymnosperms and * angiosperms. Thallophytes, bryophytes and pteridophytes lack these features and thus do not reproduce by producing seeds. Fern and Funaria belong to pteridophytes and bryophytes respectively so they do not reproduce by producing seeds.