In morphology: Embryology. The development of the seed plant is basically different from that of an animal. The egg cell of a seed plant is retained within the enlarged lower part, or ovary, of the seed-bearing organ (pistil) of a flower; two sperm nuclei pass through a structure called a pollen tubeâ¦ Read More; wheat grains
Spleen Pain Causes 1  : Swelling of spleen is called splenomegaly. It can be caused by liver diseases, infections and blood related problems and also irregularity in the lymph system.  Certain infections like mononucleosis (caused by virus), toxoplasmosis (caused by parasite) and endocarditis (caused by bacteria) may cause pain in the spleen.
Problems with the spleen especially one that is enlarged can cause the following symptoms: 1  In certain cases â there are no symptoms. 2  Fullness or pain in the upper left abdomen and can spread to the left shoulder.pleen Pain Treatment. When a spleen that is enlarged causes complications or underlying problems that cannot be identified or treated, surgery to remove the spleen is an option. Actually, surgery might have the best option for recovery in some critical or chronic cases.