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.
Best Answer: An enlarged spleen isn't a specific disease but a sign of an underlying problem. Many disorders can cause enlargement of the spleen. The spleen is a small organ about the size of your fist located just below your rib cage on your left side. Its main functions are to fight infection and filter unwanted material, such as defective cells, from your blood. Causes of an enlarged spleen include: