4.1.3 a) Watter filum is die suksesvolste? Kies die korrekte antwoord vanuit die kieslys hieronder. [1] (1)

4.1.2 Teken met die hand ‘n sirkeldiagram op ‘n stuk papier om die aantal verskillende soorte in elke filum wat bestudeer is, aan te toon. Toon al jou berekeninge en rond jou finale antwoorde tot die heelgetal af.   Nadat jy dit voltooi het, skandeer die sirkelgrafiek, stoor dit as ‘n pdf en laai dit hieronder op. (12)

  b) Gee ‘n rede vir antwoord by vraag 3.2.2 a). (2)

Site where the blood pressure is greatest.

Gives rise to the right common carotid and right subclavian artery.  

Which hormone can lower blood pressure:    

The normal pH of blood is__________________________; it is maintained by___________________________.

Which great vessel(s) receive(s) blood when the right ventricle contracts?  

The thoroughfare channel is formed as a result of:

The flow in the aorta is __________ due to the presence of________________tissue.