Page 65 - Hybrid PBD 2022 Tg 5 - Biology

Biologi Tingkatan 5 Bab 2

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
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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

2.4 Kertas 2 (Bahagian C)

1. (a) Nyatakan perbandingan antara tindak balas bersandarkan cahaya dan tindak balas tidak bersandarkan
cahaya.
State the comparison between light dependant reaction and light independant reaction. [10 markah / 10 marks]
(b) Rajah di bawah menunjukkan hubungan di antara kadar fotosintesis dengan keamatan cahaya.
The diagram below shows the relationship between the rate of photosynthesis with light intensity.

Kepekatan CO
2
Kadar Concentration of CO 2
fotosintesis
Rate of
photosynthesis

Rendah Keamatan cahaya Tinggi
Low Light intensity High

Huraikan bagaimana keamatan cahaya mempengaruhi kadar fotosintesis dan faktor pengehad yang
terbabit.
Describe how light intensity affect the rate of photosynthesis and the limiting factor involves. [10 markah / 10 marks]

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02 HYBRID PBD BIOLOGY TG5.indd 40 18/11/2021 11:05 AM