18: D, homologous
20: B, DNA
I can’t see 17 or 19!
D hope that helps good day
option c is the answer
Explanation:
septum is present between the two ventricles and separates the oxygenated and deoxygenated blood. hence if it gets ruptured then the two blood will mix up. thanks
A triploid cell is the structure form during angoisperm fertilization. The cell are created in the process known as double fertilization into the endosperm which is mostly are polyploid. These are typicallly triploids that is they contain three sets of chromosomes but they varies widely from diploid (2n) to 15N.