Lesson 6.10
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Photosynthesis is the process by which chlorophyll-containing cells produce carbohydrates from carbon dioxide and water using energy from sunlight. During photosynthesis, carbon dioxide and water are converted into glucose and oxygen using light energy captured by chlorophyll. The key structures and functions of leaves that facilitate photosynthesis include stomata for gas exchange, veins for transport, palisade mesophyll containing many chloroplasts for photosynthesis, and spongy mesophyll for gas diffusion. Plants have adapted traits like stomata distribution and chloroplast placement to optimize photosynthesis according to their habitat.
Lesson 6.10
- 1. Lesson 6.10 Fotosintesis Photo=light Synthesis=produce Disediakan oleh: NUR SUHAIDAH SUKOR SMK SANDAKAN, SABAH
- 2. Photosynthesis is the process by which chlorophyll containing cells synthesis carbohydrates from carbon dioxide and water using the energy of sunlight. light Carbon dioxide (6CO2) Glucose (C6H12O6) + + water (6H2O) oxygen (6O2) chlorophyll
- 3. Sejarah Penemuan Fotosintesis 1) Jean Baptiste 5) De Saussure Tumbuhan tumbuh daripada air Fotosintesis perlukan air dan bukannya tanah 6) Robert Mayer 2) Joseph Priestly Fotosintesis menukarkan tenaga Tumbuhan hijau kembalikan solar kepada tenaga kimia oksigen ke udara dan sokong respirasi 7) Blackman Light dependent process and 3) Jan Ingenhousz light-independent. Kehadiran cahaya matahari dan pigmen hijau (klorofil)hasilkan 8) Robert hill oksigen Kloroplas hasilkan oksigen 4) Jean Senebier CO2 digunakan oleh tumbuhan
- 4. Leaf structure and function a) Leaf mosaic - Kurangkan pertindihan diantara satu sama lain - Menerima cahaya secara optimum b) Lamina - Struktur nipis memudahkan resapan CO2 dan penembusan cahaya. - joined to stem by a petiole. c) Petiole – Memegang daun pada kedudukan terbaik untuk menerima cahaya matahari d) Vein – menyokong lamina
- 5. Struktur dan Fungsi Daun Notes: complete the function of each structure. Textbook pg 130. Lesson 60 content 5
- 6. Bundle Upper Xylem Palisade sheat epidermis parenchyma Stoma Phloem Spongy Lower parenchyma
- 7. Adaptation of plants to its habitat to carry out photosynthesis Habitat Types of Stomata distribution Chloroplast plant Distribution Land Plant Hibiscus, Lower epidermis > upper High in palisade balsam epidermis mesophyll Water Lotus leaf Upper epidermis > lower • High in palisade surface epidermis mesophyll Stomata open most of time • In the water Hydrilla sp. no stomata • Found in all part difussion of gases occurs all • of the plant over plant surface Dessert or cactus • sunken stomata/in pits on • many in stems arid places the stem • photosynthesis at • leaves modified into needles the stems and thorn • reduce leaves surface to control transpiration
- 8. Kuiz a) Diffusion of CO2 and O2 in and out of leaves b) Transport of organic product c) contains lot of chloroplast d) Diffusion of CO2 and O2 within leaf e) Prevent excessive water lost f) Transport water
- 9. End SlidE ThanK you Quiz answer: a) stoma b) Phloem c) Palisade mesophyll d) Spongy mesophyll e) cuticle f) xylem
- 11. Net or pinnate venation Parallel venation (dicots) (monocots)
- 14. • Cuticle is waterproof layer on the surface of the upper epidermis. • Fx to protect the leaves