12

B /r

Answer BOTH

Write your answers on the pages provided at the end of each question.

5. Figure 6a shows a diagram of a vertical section through the human eye.

Figure 6a. Vertical section through a human eye

(a) Name the structures labelled A, B and C in Figure 6a,

(b) State the functions of the structures labelled A and B.

(c) Figure 6b shows the journey that Fred needs to take to reach his home.

(3 marks)

(2 marks)

,— C—

Figure 6b. F red’s journey to his home

Sorretirres Fred en is up he slope Fxplain how l s bre h ng and heart ra e changeas he runs up the slope (5 marks)

) P

2 2. C £

C

I

V)

C

ELC

l

I-’ z

jH3’

fr -I-

(j 0

C -H P C

tL

Th

I

fr r(

c

-p’J 5”

—,

0

E0

C

1’

I

Integrated Science

Paper 02— June 2011

Comments

ion5:Exen2and3

Part (a) These candidates were awarded full marks for this part because the candidateswere able to correctly identify the labeled parts of the eve.

Part (b) These candidates were awarded full marks for this part because the candidatescre able to clearly and correctly mark the functions of the labeled structures.

Part(c) These candidates were awarded full marks for this part because the candidateswere able to provide clear and detailed explanations demonstrating theirunderstanding of how breathing and heart rates change during exercise asrequired in (i). The candidates were also able to name the sensory organsinvolved in the activity and to explain correctly the role which the sensoryorgans played in the activity.