Physics Chemistry Biology Question No. 6 What will be the number of chromosomes in prothallus, antheridium, antherozoids, spores, if the cell of the archegonium of a fern plant has 20 chromosomes? 0 O O 20, 20, 20, 20 O 40, 40, 40, 40 0 O O 20, 20, 40, 40 040, 40, 20, 20ई सीक आंसर दो
Answers
Explanation:
An embryo is developed from a diploid zygote. The spore is formed from a spore mother cell on reduction division and hence, spore is haploid and the embryo is diploid. So, the foot of embryo have chromosome number 20 and spore has 10.
Answer:
Number of chromosomes in prothallus, antheridium, antherozoids, spores will be 20, 20, 20, 20 and 20.
Explanation:
What is Prothalus:
Prothallus is the gametophyte of pteridophytes.
In pteridophytes, haploid spores germinate to generate gametophytes. As a result, gametophyte is haploid.
What is anthredium:
The male gametophyte, antheridium, bears male sex organs, whereas the female gametophyte, archegonium, bears female sex organs.
What are antherozoids:
Because sperm organs are haploid, they create gametes by mitosis. Male gametes, also known as antherozoids, are haploid.
What are spores:
Haploid structures include prothallus, antheridium, archegonium, antherozoids, and spores.
Result:
As a result, each of them will have 20 chromosomes.