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Q. Soon after the three germ layers are formed in a developing embryo, the process of organogenesis starts. The hum an brain is formed from the

KVPYKVPY 2011

Solution:

The ectoderm differentiates to form the nervous system (spine, peripheral nerves and brain), tooth enamel and the epidermis (the outer part of integument). It also forms the lining of mouth, anus, nostrils, sweat glands, hair and nails.