Page 77 - APS(2022)_TG1 _Edisi Guru

Sains Tingkatan 1 Bab 2
Tarikh:
EKSPERIMEN 2.10 Klorofil Diperlukan untuk Fotosintesis
Wajib Chlorophyll is Needed for Photosynthesis Pendekatan inkuiri

Tujuan Menunjukkan klorofil diperlukan untuk fotosintesis
Aim To show that chlorophyll is needed for photosynthesis
Bahagian bukan hijau
Pernyataan Adakah klorofil diperlukan untuk fotosintesis? Non-green part
BAB
Masalah Is chlorophyll needed for photosynthesis? Bahagian hijau
Problem statement Green part
2
Hipotesis Klorofil diperlukan untuk fotosintesis.
Hypothesis
Chlorophyll is needed for photosynthesis.

Pemboleh Ubah (a) yang dimanipulasikan / that is manipulated : Kehadiran klorofil / Presence of chlorophyll
Variables
(b) yang bergerak balas / that is responding : Kehadiran kanji / Presence of starch
(c) yang dimalarkan / that is kept constant : Jenis daun, jumlah air / Type of leaf, quantity of water

Bahan Daun bervariegasi, larutan iodin dan alkohol
Materials Variegated leaf, iodine solution and alcohol
Radas Bikar, penunu Bunsen, tabung uji, rod kaca, kasa dawai, tungku kaki tiga, jubin putih, penitis
Apparatus dan forseps / Beaker, Bunsen burner, test tube, glass rod, wire gauze, tripod stand, white tile, dropper and forceps

Prosedur 1. Petik sehelai daun bervariegasi yang telah didedahkan pada cahaya matahari selama dua jam.
Procedure Pluck a variegated leaf that has been exposed to sunlight for two hours.
2. Uji kehadiran kanji pada daun. Lukis dan labelkan pemerhatian anda.
Test the leaf for the presence of starch. Draw and label your observation.

Kaedah 1. Sehelai daun bervariegasi yang telah didedahkan pada cahaya matahari selama dua jam
Method
dipetik.
A variegated leaf that has been exposed to sunlight for two hours was plucked.

2. Kehadiran kanji pada daun diuji. Pemerhatian dilukis dan dilabelkan.
The leaf was tested for the presence of starch. The observation was drawn and labelled.

Pemerhatian
Observation

Perang
Brown
Biru tua
Blue-black

Perbincangan 1. Apakah itu klorofil? / What is chlorophyll? Pigmen hijau dalam daun / The green pigment in leaves
Discussion
2. Bahagian hijau daun mengandungi klorofil.
The green part of the leaf contains chlorophyll.
3. Daun tidak bervariegasi tidak sesuai digunakan kerana hanya mempunyai
bahagian berwarna hijau yang menghasilkan kanji.

Non-variegated leaf not suitable because it only has green part which produces starch.

Kesimpulan Klorofil diperlukan untuk fotosintesis. Hipotesis diterima .
Conclusion
Chlorophyll is needed for photosynthesis. The hypothesis is accepted .

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02 APS SAINS TG1.indd 44 21/07/2021 8:37 AM