Biology form 4 plus revison

This application features K.C.S.E revision questions and answers with the following form four topics

-Structure and properties of chromosomes

-Tissue distribution in monocotyledonous and dicotyledonous

-Structure of DNA

-Effects of drug abuse in human health

-Structure and functions of parts of a human ear

-Evidence of organic Evolution

-Human Eye

-Genetics

-Evolution

-The origin of life

-Support and movement

-Mutation

-Nervous system

-Reception

-Tropism