BIOLOGY STPM DRILL REVISION C4 PLANTS

 *PDP SEMASA PKPB (BELAJAR DARI RUMAH)*

*Minggu 47* 

*7 hingga 11 Dec 2020*

*SUBJEK* : BIOLOGI

*TARIKH* : 10.12.2020

*HARI* : Khamis 11.30 - 1.30pm

*TAJUK* :  6.3 Light Independent (C4 plants)

*BUKU/BAHAN* : Soalan esei dan video pembelajaran melalui youtube. 

*BUKU/BAHAN* : Modul Chap 5 SOALAN ESEI, koleksi Soalan Peperiksaan STPM 2016 & 2018, video pembelajaran melalui youtube dan platform blog Cikgu Seri.

*AKTIVITI* :

1. Murid diminta menjawab 3 soalan esei yang diberikan berikut dalam masa 60minit.

SOALAN ESEI TERSEBUT:

i. DESCRIBE ADAPTATIONS OF C4 PLANTS IN THE TERRESTRIAL LAND & SIGNIFICANCE OF KRANTZ ANATOMY TO MINIMISE PHOTORESPIRATION. (8marks)

ii. Draw Krantz Anatomy in C4 plants. (3marks)

iii. Explain Hatch & Slack Pathway                          (8 marks)

2. Murid diminta menonton video perbincangan jawapan oleh guru pembelajaran melalui link youtube ini 

3. Murid diminta membuat pembetulan dengan berpandukan skema jawapan perbincangan oleh guru

https://youtu.be/4DeDoeutbHg

TIPS!!!

Photorespiration is a process in the metabolism of plants in which RuBP (a sugar) combines with oxygen with the help of an enzyme (Rubisco), instead of carbon dioxide during normal photosynthesis.

UNDER WHAT CONDITION DOES PHOTORESPIRATION OCCUR?

During dry-hot seasons, plants are forced to close their stomata. Thus, the concentration of carbon dioxide in the leaf decreases. If the plant continues to fix CO2 when its stomata are closed., the CO2 will get used up and the O2 / CO2 ratio in the leaf will increase. O2 will compete with CO2 for the active sites in Rubisco. Rubisco starts to combine with O2 with RuBP instead of Co2.