Answer
397.2k+ views
Hint: In this plant a dominant sporophytic phase and a short-lived gametophytic phase are present. Selaginella is commonly known as ‘spike moss’.
Complete answer:
Selaginella is a pteridophyte which is mainly seen in humid temperate and tropical rainforests. Selaginella exhibits a regular alternation between sporophytic and gametophytic generations. It is a free-living plant with a distinct root, stem, and leaves and it grows for a long time. It reproduces asexually by the formation of haploid spores within the sporangia. The spores germinate into separate male and female gametophytes. The gametophytes are haploid, free-living, and exist for a short time only. They represent the second phase in the life cycle of Selaginella. The male gametophyte produces male gamete in the antheridium, while the female gametophyte produces the egg in the archegonium. Male and female gametes fuse, forming a diploid zygote. The first cell of the sporophytic generation is the zygote. From the zygote, a free-living, the sporophyte is produced. Thus, in the life cycle of Selaginella, a distinct alternation between sporophytic that is diploid and gametophytic that is haploid generations can be seen.
So, the correct answer is diplo-haplontic.
Note:
-The male sex organ in non-flowering plants is called an antheridium and the female sex organ in non-flowering plants is the archegonium.
-A gametophyte is a haploid gamete producing form of a plant and a sporophyte is the spore-producing form of the plant.
-The diplohaplontic life cycle is also referred to as haplodiplontic, diplobiontic, or dibiontic life cycle. In this life cycle, multicellular diploid and haploid stages occur and meiosis has occurred in ‘sporic’ condition.
Complete answer:
Selaginella is a pteridophyte which is mainly seen in humid temperate and tropical rainforests. Selaginella exhibits a regular alternation between sporophytic and gametophytic generations. It is a free-living plant with a distinct root, stem, and leaves and it grows for a long time. It reproduces asexually by the formation of haploid spores within the sporangia. The spores germinate into separate male and female gametophytes. The gametophytes are haploid, free-living, and exist for a short time only. They represent the second phase in the life cycle of Selaginella. The male gametophyte produces male gamete in the antheridium, while the female gametophyte produces the egg in the archegonium. Male and female gametes fuse, forming a diploid zygote. The first cell of the sporophytic generation is the zygote. From the zygote, a free-living, the sporophyte is produced. Thus, in the life cycle of Selaginella, a distinct alternation between sporophytic that is diploid and gametophytic that is haploid generations can be seen.
So, the correct answer is diplo-haplontic.
Note:
-The male sex organ in non-flowering plants is called an antheridium and the female sex organ in non-flowering plants is the archegonium.
-A gametophyte is a haploid gamete producing form of a plant and a sporophyte is the spore-producing form of the plant.
-The diplohaplontic life cycle is also referred to as haplodiplontic, diplobiontic, or dibiontic life cycle. In this life cycle, multicellular diploid and haploid stages occur and meiosis has occurred in ‘sporic’ condition.
![seo images](https://www.vedantu.com/question-sets/a2e00f38-a51e-428a-ad38-7f00b55b71a81830328562902269240.png)
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)