Hey,

Both the subjects are very simple, and you can easily score good marks in these subjects. And let me tell you that, for CBSE English , there are two parts. One is literature and the other one is grammar.

For the literature part, only the flamingo and vistas books are enough. You have to just read the chapters thoroughlly.

For the grammar part, you can take help of some online resources to learn some grammar. And for grammar the best thing is that, solve previous year question papers as much as you can.

For biology , NCERT is the god book. But if you have studied ncert completely, then you can go for trueman's book of biology. This is a good book.

At last, I want to add that, practice as much as you can. This will improve your score.

Best of luck for your exam.