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Q.
Which of the following is not derived from ectoderm?
Delhi UMET/DPMTDelhi UMET/DPMT 2002
Solution:
Fate of the three germ layers are given here under: Ectoderm Mesoderm Endoderm Epidermis and skin derivatives Dermis Gut Cutaneous gland Muscular tissue Glands of stomach and intestine Nervous ststem (Brain + spinal cord) Connetive tissue Tongue Motor and optic nerve Endoskeleton Lung, trachea and bronchi Eye (retina lens and cornea) Vascular system (heart and blood vessel) Urinary blander Conjuctiva, cliiary and iridial muscle Kiney Primordial germ cells Nasal epithelium Gonads (Reproductive system Gills Internal ear (membranous labyrinth) Urinary and genital ducts Liver Lateral line sense orgen Coelom and coelomic epithelium Pancreas Stomodaeum (mouth) Chorold and sclerotic coat of eye Thyroid gland Salivary gland Adrenal cortex Parathyroid gland Enamel of teeth Spleen Thymus Proctodaeum Notochord Middle ear Pituitary gland Parietal and visceral peritoneum Eustachian tube Pineal body Mesentron (midgut) Adrenal medulla Lining of vagina and urethra Hypothalamus Prostate gland