<prompt> Septum transversum develops from -Paraxial mesodermIntermediate mesodermMedial plate mesodermLateral plate mesoderm  <response>: Ans. is d i.e., Lateral plate mesoderm o Mesoderm is divided into three parts1. Paraxial mesoderm: It is organized into somites which in turn gives rise toi Sclerotomes: Form axial skeleton including vertebrae, ribs and parts of neurocranium.ii Myotomes: Form all voluntary skeletal muscles of head, trunk and limbs.iii Dermatomes: Form dermis of skin, especially over dorsal regions.2. Intermediate mesoderm: It gives rise to major portion of urogeninal systemi Urinary organs: Kidney, ureters, trigone of bladder, posterior wall female urethra, posterior wall of upper half of prostatic part of male urethra, inner glandular zone of prostate.ii Reproductive organs: Gonads testis and ovary, epididymis, ducts deferens, seminal vesicle, ejaculatory duct, uterus, uterine tube and upper part of vagina.3. Lateral plate mesoderm : It formsi Somatopleuric mesoderm parietal layerii Splanchnopleuric mesoderm visceral layeriii Spetum transversumiv Angiogenic mesoderm 