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.
Spleen Pain Causes. The spleen is a lymphatic organ that is located in the upper-left part of the abdomen, and is protected by the rib cage. It serves a variety of important functions in the body. This article deals with the various causes that lead to spleen pain, along with the related symptoms and treatment options. Spleenless or Not!