Page 29 - PBD Plus Biologi T5 (EG)

Biologi Tingkatan 5 Bab 2

(b) Kesan suhu terhadap kadar fotosintesis / Effect of temperature on the rate of photosynthesis
Bilangan gelembung udara yang dibebaskan
Suhu ( C) Kadar fotosintesis
o
-1
o
Temperature ( C) dalam masa 5 minit (min )
Number of air bubbles released in 5 minutes
10
20
30 (Jawapan murid / Student's answer)
35
40
50

(c) Kesan kepekatan karbon dioksida terhadap kadar fotosintesis
Effect of carbon dioxide concentration on the rate of photosynthesis
Kepekatan karbon Bilangan gelembung udara yang dibebaskan
Penerbitan Pelangi Sdn. Bhd
dioksida (%) dalam masa 5 minit Kadar fotosintesis
-1
Carbon dioxide (min )
concentration (%) Number of air bubbles released in 5 minutes
0.02
0.04
0.08
0.12 (Jawapan murid / Student's answer)
0.16
0.20

Perbincangan/ Discussion:
1. Apakah fungsi larutan natrium hidrogen karbonat dalam eksperimen ini?
What is the function of sodium hydrogen carbonate solution in this experiment?
Untuk membekalkan gas karbon dioksida kepada Hydrilla sp. bagi menjalankan proses fotosintesis
To supply carbon dioxide for Hydrilla sp. to carry out photosynthesis.
2. Apakah yang diwakili oleh bilangan gelembung gas yang dibebaskan dalam masa 5 minit?
What is represented by the air bubbles released in 5 minutes?
Gas oksigen yang dibebaskan oleh Hydrilla sp. semasa fotosintesis
Oxygen released by Hydrilla sp. during photosynthesis
3. Apakah yang berlaku pada proses fotosintesis pada suhu 50 C? Jelaskan.
o
What happen to the photosynthesis at temperature 50 C? Explain.
o
Pada suhu 50 C, suhu terlalu tinggi bagi tumbuhan Hydrilla sp. Proses fotosintesis berhenti kerana
o
enzim yang terlibat dalam proses itu telah ternyahasli.
At 50 C, the temperature is too high for Hydrilla sp. Photosynthesis stops because the enzymes involved in the process denatured.
o
Kesimpulan / Conclusion:
(a) Semakin tinggi keamatan cahaya, semakin tinggi kadar fotosintesis
The higher the light intensity, the higher the rate of photosynthesis
(b) Semakin meningkat suhu, semakin tinggi kadar fotosintesis
The higher the temperature, the higher the rate of photosynthesis
(c) Semakin meningkat kepekatan karbon dioksida, semakin tinggi kadar fotosintesis
The higher the carbon dioxide concentration, the higher the rate of photosynthesis

Cuba jawab Praktis SPM 2, K2: S3
TAHAP PENGUASAAN 1 2 3 4 5 6 39 © Penerbitan Pelangi Sdn. Bhd.

02 PBD PLUS BIOLOGY TG5.indd 39 25/11/2022 10:14 AM