Question

Group of cells with similar structure and designed to give highest efficacy of function

Answer 1

Ciao,
Tissues are the group of cells having same structure and perform a specific similar function.
e.g tissues in our muscles.
these tissues of two or mir type combine to form organ
really hope that you will find it helpful.stay blessed☺

Answer 2

Group of cells with similar structure and designed to give highest efficacy of function is tissue