Which of the following develops from ectoderm
Spinal cord and brain
Liver and heart
Notochord and vertebral column
Eye and skin
It's Obvious
How many cleavages are completed in $16$ celled stage of egg.
The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?
Yolk of egg in the vertebrates is formed in
Cells of leydig are found in
Notochord, skeletal system and dermis of the skin are the derivatives of
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