Mesoderm gives rise to all the structures except
Nervous system
Muscular system
Circulatory system
Gonads
(a)Nervous system develops from ectodermal layer.
Assertion : Mammalian ova produces hyaluronidase.
Reason : The eggs of mammal are microlecithal and telolecithal.
Cumulus covers
Given a diagram showing a portion of a seminiferous tubule. Identify the marked alphbates
Primary sex organs differ from the secondary sex organs in all the following, except
$A$ : The morula passes through the phase of compaction, produces two major type of cells : the peripheral cells and the inner cell mass. $R$ : The descendants of inner cell mass become the trophoblast cells
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