Unit 7 Biology Sri Lankan A Level

The unit 7 is all about coordination and homeostasis.

I will  give you some definitions will will  be very useful in your exams:

coordination: when the conditions of the external or internal environment of an organism changes and a specific response is made by the organism, and the a=organism gets adapted ,thus maintaing constant internal conditions resulting in the survival of the organism

white matter: collection of axon of neurone
grey matter: collection of cell  bodies of neurones

Remember this way: u got a huge collection of rats with huge tails.The collection of the rats id the grey mater and the collection of the tail of rat is the white matter.

To download the teachers guide for a level biology  syllabus and teachers guide in sinhala or tamil or english click here

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Sri lankan a level bio stream 2012 2013 2014