Dear Swapna ,

If you go through Botany 11th and 12th mostly 1st year weightage is more because as a fresher we dont familiar with every part and every syllabus of botany but in 12th almost is same but you will feel less if you study well in 11th then it will easier for you and catch up quickly and most of things will repeat again .

But if we go through practically then both are holding equal position .So i hope you will understand .

Thanks