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(A) Based on the standard evolutionary chart of vertebrates provided in the $NCERT$ textbook: $1$. The organism labeled $P$ represents the Tuatara,whi

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Tuatara,Therapsids

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(A) Based on the standard evolutionary chart of vertebrates provided in the $NCERT$ textbook: $1$. The organism labeled $P$ represents the Tuatara,which is a living fossil belonging to the lineage of reptiles. $2$. The organism labeled $Q$ represents the Therapsids,which are the ancestors of mammals that evolved from synapsids during the Triassic period. Therefore,$P$ is Tuatara and $Q$ is Therapsids.

Column-$I$	Column-$II$
$A.$ $500$ million years ago	$1.$ Sea weeds and few plants
$B.$ $350$ million years ago	$2.$ Jawless fishes
$C.$ $320$ million years ago	$3.$ Invertebrates

The following chart represents the evolutionary history of vertebrates through geological periods. What are the organisms $P$ and $Q$?

Similar Questions

The fish-like giant reptile which existed $200$ million years ago (mya) was:

The Cretaceous period of the Mesozoic era is characterized by which of the following?

Match the following columns.
Column-$I$ Column-$II$
$A.$ $500$ million years ago $1.$ Sea weeds and few plants
$B.$ $350$ million years ago $2.$ Jawless fishes
$C.$ $320$ million years ago $3.$ Invertebrates

The $Jurassic$ period of the $Mesozoic$ era is characterized by:

Which of the following is generally considered the era of mammals?

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