Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following is correct grouping ? (1) Ectoderm?retina,epidermis, nervous system (2) Mesoderm?ovary, urinary bladder, Kidney (3) Mesoderm?kidney, connective tissue testis (4) Endoderm?thyroid, pineal gland, thymusA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
| Ectoderm | Mesoderm | Endoderm |
| Epidermis | Dermis | Gut |
| Cutaneous glands | Muscular tissue | Visceral organs |
| Nervous system (Brain and spinal cord) | Connective tissue | Glands of stomach and intestine |
| Eye (Retina, Iens and cornea) | Endoskeleton | Tongue |
| Nasal epithelium | Vascular system (heart and blood vessels) | Lungs, trachea and bronchi |
| Internal ear | Kidneys | Urinary bladder |
| Lateral line sense organ | Gonads | Gills |
| Stomodaeum | Urinary and genital ducts | Liver and pancreas |
| Proctodaeum | Coelom and coelomic epithelium | |
| Pitutary | Chroid and sclerotic coats of eye | Thyroid gland |
| Pineal gland | Adrenal cortex | Parathyroids |
| Adrenal nedulia | Spleen | Thymus middle ear Eustachian tube |
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