DENDROLOGY AND SOCIETY
FAMILIES OF GYMNOSPERM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the dominant stage of mosses (what we see as the green body)?
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Gametophyte
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Sporophyte
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -In mosses, the dominant stage is the haploid generation (the gametophyte). This means that the green, leafy gametophytic tissue is haploid (has only one set of chromosomes).
Detailed explanation-2: -So the leafy-stemmed part is the gametophyte in the great majority of species. It now becomes clear why that fact is often generalized to the statement that the gametophyte in all mosses is leafy-stemmed.
Detailed explanation-3: -In Bryophytes which are the nonvascular plants, the dominant phase is gametophyte. Riccia is a liverwort belonging to Bryophyta and hence shows a dominant gametophytic stage. Thus the correct answer is option D.
There is 1 question to complete.