in funaria 20 chromosomes are present in rhizoids then the no of chromosomes in gametophyte, seta, and capsule foot will be
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Rhizoids are a part of gametophytic stage, so they are haploid(n)
whereas foot,seta,capsule are the parts of sporophytic stage ,so
they are diploid (2n).
Hence , gametophyte=n=20 chromosomes
foot,seta,capsule=2n=40 chromosomes.
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2n= 40 chromosomes
Explanation:
- The Funaria belongs to the Bryophyte division of the plant kingdom. The life cycle of the Funaria is divided into two phases: haploid gametophyte and diploid sporophyte.
- The rhizoids are the root-like structures present in the gametophytic phase, therefore, maintains haploidy.
- The capsule, foot and seta are the structures which grow during the diploid sporophyte stage.
- Since the rhizoids are haploid (n) and contain 20 chromosomes, therefore, the diploid structures( 2n) will contain 2x 40= 40 chromosomes each cell.
Thus, 2n= 40 chromosomes are correct.
To learn more:
1. Bryophytes: https://brainly.in/question/12329269
2. Funaria: https://brainly.in/question/1325859
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