A group of cells having a common (A)____ and usually performing a common functin, called (B)____

Two lines having a common point is called :

A group of similar cells performing the same function is called

The tissue is a group of cells having (A) different origin (B) Same origin (C ) performs the same function (D) absent in plants

The tissue is a group of cells having (A) different origin (B) Same origin (C ) performs the same function (D) absent in plants

What is common to all cells?