Page 12 - Praktis Topikal A+ Sains Tg 1_Pan Asia Publications

8. Suatu eksperimen telah dijalankan untuk mengkaji keperluan air untuk proses fotosintesis.
An experiment is carried out to investigate the need of water in photosynthesis process.

A B
(a) Berdasarkan eksperimen ini, nyatakan satu hipotesis yang sesuai.
Based on this experiment, state one suitable hypothesis.
Tumbuhan memerlukan air untuk proses fotosintesis.
Plant needs water for photosynthesis process.

(b) Senaraikan semua pemboleh ubah yang berkaitan:
List all the relevant variables:
(i) Pemboleh ubah dimanipulasikan : Kehadiran air
Manipulated variable Presence of water
Perubahan warna larutan iodin
(ii) Pemboleh ubah bergerak balas :
Responding variable Change in the colour of iodine solution
Jenis tumbuhan
:
(iii) Pemboleh ubah dimalarkan
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Constant variable Type of plant
(c) Lengkapkan jadual berikut.
Complete the following table.

Pemerhatian Inferens
Observation Inference
Daun (i) Warna perang larutan (ii) Kanji hadir dalam daun. Fotosintesis
tumbuhan A iodin menjadi biru tua. berlaku dengan kehadiran air.
Leaf of plant A Brown iodine solution turns Starch is present in the leaf.
dark blue. Photosynthesis occurs in the
presence of water.

Daun (iii) Warna perang larutan (iv) Tiada kanji pada daun. Proses
tumbuhan B iodin kekal tidak berubah. fotosintesis tidak berlaku tanpa air.
Leaf of plant B Brown iodine solution remains No starch is found in the leaf.
unchanged. Photosynthesis process does not
occur without water.

(d) Nyatakan kesimpulan bagi eksperimen ini.
State the conclusion for this experiment.
Air diperlukan untuk proses fotosintesis.

Water is needed for photosynthesis process.

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