There are at least a dozen known species in the extinct genus Lystrosaurus. If each species was suited to a quite different environment, then this relatively large number of species is likely due to

TLS Online TPP Program

#Question id: 28435

#Unit 5. Developmental Biology

Primitive Streak is first arises from which area or cells?

TLS Online TPP Program

#Question id: 28436

#Unit 5. Developmental Biology

Primitive Groove is____

TLS Online TPP Program

#Question id: 28437

#Unit 5. Developmental Biology

Primitive groove is homologous to_____

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#Question id: 28438

#Unit 5. Developmental Biology

A regional thickening of cells at the anterior end of the primitive streak is termed____

a) Hensen’s node 

b) Primitive Knot

c) Primitive Groove

d) Primitive pit

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#Question id: 28439

#Unit 5. Developmental Biology

Hensen’s node is functionally equivalent to the which structure of amphibian? 

TLS Online TPP Program

#Question id: 28440

#Unit 5. Developmental Biology

A funnel-shaped depression at the center of Hensen’s node through which cells migrate to form the notochord and prechordal plate is called as___