Examlex
Based on average life expectancy, which of the following groups would you expect to collect Social Security benefits for the greatest number of years?
Archegonia
The female reproductive organ in ferns, mosses, and some gymnosperms, where the egg cell is produced and fertilization occurs.
Sperm
Male reproductive cells designed to fertilize female eggs in sexual reproduction.
Gametophyte
A stage in the life cycle of plants and algae that undergoes alternation of generations, responsible for producing gametes.
Prothallus
The free-living, haploid gametophyte in ferns and other seedless vascular plants.
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