A) ectoderm, mesoderm and endoderm
B) ectoderm and endoderm
C) mesoderm
D) ectoderm
Correct Answer: D
Solution :
Glands in a vertebrate body originate from ectoderm. Glands are the modification of epidermis of skin. The ectoderm also gives rise to the neural crest (ganglion, sensory cell, etc) and neural tube (brain, spinal cord etc).
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