Hi there,

Chapter wise weightage of 12th biology in KCET is following:

Neural Control and Co-ordination-5

Photosynthesis in Higher Plants-5

Respiration in Plants-5

Plant Growth and Development-5

Biomolecules-5

Plant Kingdom-5

Cell Cycle and Cell Division-5

Body fluids and Circulation-4

Morphology of Flowering Plants-4

Anatomy and Flowering Plants-4

Locomotion and Movement-4

Breathing and Exchange of Gases-3

Living World-3

Excretory Products and their Elimination-3

Digestion and Absorption-3

Biological Classification-2

Human Reproduction-7

Microbes in Human Welfare-6

Biotech: Principles and Processes-6

Organism and Population-6

Ecosystem-6

Environmental Issues-6

Biotech: Application-5

Reproduction in Organisms-5

Reproductive Health-5

Evolution-5

Biodiversity and Conservation-4

Hope it helps you

Good luck!