Page 64 - APS(2022)_TG5 _Edisi Guru

Sains Tingkatan 5 Bab 2

2. Letakkan keempat-empat set susunan radas itu di rak tabung didih dan labelkan A, B, C dan
D (rujuk jadual di bawah).
Place the four sets of apparatus in a boiling tube rack and label as A, B, C and D (refer to the table below).
3. Letakkan rak tabung didih itu di tepi tingkap dan udarakan larutan di dalam tabung didih
setiap hari.
Put the boiling tube rack beside the window and aerate the solution in the boiling tubes every day.
4. Tambahkan air suling ke dalam tabung didih sekiranya terdapat penurunan aras larutan.
Add distilled water into the boiling tubes if the level of the solution decreases.
5. Perhatikan pertumbuhan anak benih jagung setiap hari selama dua minggu.
BAB
Observe the growth of the maize seedlings every day for two weeks.
2
6. Bulatkan pemerhatian anda pada akhir eksperimen dalam jadual yang berikut.
Circle your observations at the end of the experiment in the following table. K2P4

Pemerhatian
Observation Ciri-ciri anak benih jagung
Characteristics of maize seedling
K3 Tabung didih
PI Boiling tube Pertumbuhan
1 Ketinggian Saiz daun Warna daun akar
2 Height Size of leaves Colour of leaves Growth of roots
3
S
EKSPERIMEN WAJIB
Normal Kecil Yellow Normal
Normal Small Kuning Normal
A – Larutan kultur Knop
lengkap
Complete Knop’s solution
Terbantut Normal Hijau Terbantut
Stunted Normal Green Stunted
Terbantut Normal Yellow Normal
B – Larutan kultur tanpa Stunted Normal Kuning Normal
nitrogen
Culture solution without
nitrogen Normal Kecil Hijau Terbantut
Normal Small Green Stunted

Normal Kecil Ungu Normal
C – Larutan kultur tanpa Normal Small Purple Normal
fosforus
Culture solution without
phosphorus Terbantut Normal Yellow Terbantut
Stunted Normal Kuning Stunted

Normal Normal Yellow Normal
Normal Normal Kuning Normal
D – Larutan kultur tanpa
kalium
Culture solution without Tompok perang
potassium Terbantut Kecil Terbantut
Stunted Small kemerahan Stunted
Reddish-brown patches

Aktiviti Interaktif K3P1 K3P2 K3P3
GURU Pemerhatian Eksperimen
GURU
Observation of the Experiment
Perbincangan 1. Nyatakan tabung didih yang bertindak sebagai eksperimen kawalan.
Discussion State boiling tube that acts as control experiment.

Tabung didih A / Boiling tube A

2. Mengapakah tabung didih dibalut dengan kertas hitam? Menganalisis
Why are the boiling tubes wrapped with black paper?
cahaya matahari alga
Untuk menghalang supaya tidak bertumbuh dalam
larutan kultur
To block the sunlight so that algae do not grow in the culture solution

© Penerbitan Pelangi Sdn. Bhd. 40

02 BAB 2.indd 40 7/28/21 3:01 PM