Dear aspirant

This two chapters are most important topics from class 12th also one of most important topics which examiner likes to ask. Minium of 12-13 questions will come from these two topics which can provide you 40-50 marks. So you shouldn't leave this portion and try to be strong enough in this topic.

You can check Chapterwise weightage for different topics of all three subject from the link below

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-chapter-wise-weightage-and-important-topics/amp

Hope it was helpful

All the best