lForm 5
Blood components
Rhesus factor
Reflex action
Tropism response
Zygote development
Role of placenta
Formation of twins
Double fertilisation
Secondary growth
Maintaining the chromosome number
Sex determination
Chromosomal mutation














Centrifuge is a method to separate matter which is different in weight. Downward force will cause heavy matter deposit at the bottom while the light matter at the top. In this animation, erythrocyte is deposit at the bottom because it contain iron that makes it heavier compared to the other blood components.