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.
The spleen is an organ that is small and located just below the rib cage on the left side. Usually, the spleen is approximately the size of a fist, but there are a number of conditions that can cause the spleen to enlarge. This can happen because of infections, liver diseases as well as some cancers.roblems 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.