Question

if the sporophyte of moss has 36 chromosome. what would be the number of chromosome in its protonema​


plz answer correctly

Answer 1

Mosses:

• They are the members of bryophytes.
• Their have haplontic life cycle, their main plant-body is of haploid,i.e, gametophyte(n).
• gametohyte of mosses at vegetative stage is called as protonema(n), which flattened dorsoventrally with branches.
• At the onset of sexual reproduction, they become prostate with leafy structure, different male and female structures on their different thallus.
• After fertilization zygote(2n) forms sporophyte(2n), which is dependent on gametophyte; differentiated into foot,seta and capsule.
• Spores(n) are formed by meiosis inside sporophyte, and get dispersed into air.
• After landing at suitable it forms into gametophyte, another same life cycle starts.

By above points:

sporophyte = 2n = 36 chromosomes.

★ Protonema = n = 18 chromosomes.

$\implies\rm protonema\: of\: mosses\: has\: 18\: chromosomes.$

Answer 2

Explanation:

$\huge\mathbb\fcolorbox{purple}{lavenderblush}{✰Answer}$

Mosses:

They are the members of bryophytes.

Their have haplontic life cycle, their main plant-body is of haploid,i.e, gametophyte(n).

gametohyte of mosses at vegetative stage is called as protonema(n), which flattened dorsoventrally with branches.

At the onset of sexual reproduction, they become prostate with leafy structure, different male and female structures on their different thallus.

After fertilization zygote(2n) forms sporophyte(2n), which is dependent on gametophyte; differentiated into foot,seta and capsule.

Spores(n) are formed by meiosis inside sporophyte, and get dispersed into air.

After landing at suitable it forms into gametophyte, another same life cycle starts.

By above points:

sporophyte = 2n = 36 chromosomes.

★ Protonema = n = 18 chromosomes.

$\implies\rm protonema\: of\: mosses\: has\: 18\: chromosomes.$