File : THESIS.pdf - Universitas Muhammadiyah Malang

C 80
D 90
18. The following graph shows the pressure changes in the left atrium, left ventricle and
aorta during a cardiac cycle.
With reference to the semilunar and bicuspid valves, what is happening at points 1,
2, 3 and 4?
A
B
C
D
semi-lunar valve bicuspid valve
opens closes opens closes
1
1
2
2
2
2
3
3
19. Which features of xerophytes reduce water loss by transpiration?
A
B
C
D
rolled leaves swollen leaves sunken stomata thick waxy cuticle
X
X
3
4
1
4
20. Between 1954 and 1958 many doctors read a report that linked smoking cigarettes
to deaths form lung cancer.
X
4
3
4
1
X
197