KBAT SSI 2015

SOALAN 12

Chapter 3 : Excretion1.(a)Define excretion./Definasikan perkumuhan. ............................................................................................................. (1 mark)

b) Diagram below shows a kidney. Gambarajah dibawah menunjukkan ginjal

(i)Label X, Y and Z. Label X , Y dan Z (3 marks) (ii) State the function of Z Nyatakan fungsi Z

............................................................................................................... (1 mark)

Y

KBAT SSI 2015

(c)By using the diagram above , explain how the dialysis machine works.Dengan menggunakan gambarajah diatas, terangkan bagaimana mesin dialisis bekerja?

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(3 marks)

(d) Draw lines to show the correct match between excretory organs and their waste products.Lukis garisan untuk memadankan organ perkumuhan dengan bahan kumuh. masing-masing.

Excretory organ/Organ perkumuhan

Waste products/bahan perkumuhan

Lungs/Peparu Urea, water, mineral salts/urea, air, garam mineral

Skin/Kulit Urea, water, mineral salt , nitrogenous waste/urea, air garam mineral , bahan buangan bernitrogen

Kidneys/Buah pinggang Carbon dioxide , water/ karbon dioksida, air

(3 marks)

KBAT SSI 2015

Answer:1.a) Excretion is a process in which living things remove waste and other

unwanted substances from their body. ( 1 mark) (b) Diagram below shows a kidney. Gambarajah dibawah menunjukkan ginjal

(i)Label X, Y and Z. Label X , Y dan Z X : cortex Y : renal artery Z : ureter (3 marks) (ii) State the function of Z Nyatakan fungsi Z Channel urine from kidney to urinary bladder (1 mark)(c)By using the diagram above , explain how the

dialysis machine works.

Dengan menggunakan gambarajah diatas, terangkan bagaimana mesin dialisis bekerja?

The blood will flow out from the artery into the tube (1m)When the blood pass through the tube that immersed into a bath of salt solution,the waste products will diffuse through semipermeable membrane wall to the salt solution.(1m).IThe purified blood then flows back into the vein of the person’s arm. ( 1m) (3 marks)

Y

KBAT SSI 2015

(d)Draw lines to show the correct match between excretory organs and their waste products.Lukis garisan untuk memadankan organ perkumuhan dengan bahan kumuh. masing-masing.

Excretory organ/Organ perkumuhan

Waste products/bahan perkumuhan

Lungs/Peparu Urea, water, mineral salts/urea, air, garam mineral

Skin/Kulit Urea, water, mineral salt , nitrogenous waste/urea, air garam mineral , bahan buangan bernitrogen

Kidneys/Buah pinggang Carbon dioxide , water/ karbon dioksida, air

(3 marks)