Spores of a seed-bearing plant can give rise to a ______________.

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BlackTom AI · Accepted Answer

The question asks what a spore from a seed-bearing plant can develop into. 
Option a) 'male gametophyte' posits that a spore can become a male gametophyte. In seed plants, microspores develop into male (micro)gametophytes, so this is a plausible outcome for certain spores. 
Option b) 'female gametophyte' posits that a spore can become a female gametophyte. In seed plants, megaspores develop into female (macro)gametophytes, so this is also a plausible outcome for the corresponding spores. 
Option c) 'sporophyte' claims a spore directly grows into a sporophyte. In seed plants, spores do not directly become the diploid sporophyte; they first form a haploid gametophyte, which then participates in fertilization to produce a new sporophyte. Therefore this is incorrect as a direct outcome. 
Option d) 'all of the above' would require all listed outcomes to be possible from a spore. Since option c is not a direct outcome, this choice is inaccurate. 
Option e) 'both a and b are possible' combines the correct possibilities: spores can develop into either male or female gametophytes depending on whether the spore is microspore or megaspore. This reflects the dual potential pathways in seed plant life cycles. 
In summary, understanding that seed plant spores differentiate into gametophytes (male or female) rather than directly into sporophytes clarifies why options a, b, and e have validity, while c and d do not. The most accurate selection is that both a and b are possible, which is captured by option e.

BIOL 312 BIOL 312 - Exam 3

Spores of a seed-bearing plant can give rise to a ______________.

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