Radiation reduces growth of tumors or sometimes shrinks them. It honestly depends on the type of cancer. But since your cancer cells are your own cells, your immune system cannot detect that there is a cancer in your body. The only way known to us is to radiation therapy so thats why its good to irradiate cancer cells i guess
Gnetophytes are gymnosperms
, they are woody and the embryo has two cotyledons
. Cycads are woody plants that produce seeds found in Subtropical and warm temperate regions and also they produce motile sperm cells.
