Ans.
Ferns and mosses are plants with primitive origins, found in moist habitats, and produce spore for reproduction instead of seeds. Both ferns and mosses produce flagellated sperms, which are able to perform locomotion.
These flagellated sperms require a thin layer of water to swim from antheridium (male organ) to archegonium (female organ), where female gametes or eggs are present.
Thus, the correct answer is option B). 'flagellated sperm.'
The life cycle components appear only in mosses and ferns is flagellated sperm.
The correct option is (B).
Mosses are small primitive plants which produce spores and are non-vascular plants. These plants do not have true leaves, stems or roots.
Ferns are small vascular plants which have true stems, leaves, and roots.
Mosses and ferns have flagellated sperms. The sperm swim in the water to reach to the egg.
Thus, option (B) flagellated sperm is correct.
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