Question

In my science reference book 's back side there is given some extra questions related to the chapters , so it is necessary to do these questions ? ​

Answer 1

Answer:

If u have understood the concept of the chapter well then u don't need to do. If u feel u have not prepared well, I will suggest u to do those questions.

Answer 2

umm

it is absolutely necessary to do all these things in a subject like science

if you don't have time,then make time but don't leave anything

and the q you asked abut classes of different phylums,

i would strictly suggest you to please ignore them...

they are of no use

if you r in class 9 then it is the most wierd thing to do so,

except you make your command strong on other topics ,

just leave this and pay no heed on it.

if uh r in class 11 and preparing for neet,then also there is no use of it,

neet mein bhi isse koi q nhi aate.....

good day bro,

have a nice day

and ye maine personal experience bataya hai,

baaki aapki marzi yrr,

don't waste your time on useless things you can spend it on the weakest points of yourself .

have a bright future yr✌☺