Question

If the chromosome no. of a plant is 2n=40 then
find out the no. as following parts: - mesophil
tissue, radical spare mother cell, endosperm
nucleus, pollen.
show step by step.​

Answer 1

n= haploid no. of chromosomes in organisms

2n= diploid no. of chromosomes in organisms

1. mesophyll tissue= tissue present in the leaf of plants. its the vegetative or sporophytic part have the whole set of genome...2n =40 chromosomes
2. radical = it's originate from the hypocotyl region of the embryonic Axis which give rises to roots ...also a vegetative part....2n=40
3. spore mother cells= these are responsible for producing spores by going meiosis....in any organisms meiosis occurs in diploid cells....so its also has 2n=40...chromosomes
4. endosperm nucleus = its formed by the triple fusion of polar nulei(2n) and male gamete(n) in the female embryo sac during double fertilization...2n+n=3n=60 no of chromosomes
5. pollen= its male gametophyte form by the reduction division or meiosis in the spore mother cells ..occurs in microsporangium. They are haploid cells...n=20 chromosomes

for detail information refer 11th bio NCERT...

Good luck ♧♧