CBSE Class 11 Biology Notes Chapter 13: Here are some suggestions on how to find simple-to-understand notes for Biology Chapter 13 if you're a student in Class 11. CBSE Class 11 Biology Notes Chapter 13, "Photosynthesis in Higher Plants," is crucial material for students to understand and they should be able to explain all of the concepts presented.
The notes for every topic, including biology, are available for free download in PDF format on our websites. Numerous study tools, such as example papers, mock test papers, past year question papers, and revision notes, are available for various grade levels. It is a crucial forum for those hoping to pass competitive exams and a lifesaver for struggling students. Experienced biology teachers use the most recent NCERT book editions to provide CBSE revision notes for Biology chapter 13 in class 12. During exams, students can review their knowledge with the use of concise keynotes and revision notes.CBSE Class 11 Biology Notes Chapter 13 PDF
Variegated Leaf Experiment
After being exposed to sunshine, a leaf that has variegated or distorted is examined for starch. Testing revealed that the white spots' absence of chlorophyll is the reason they seem colourless. We deduced from this that chlorophyll is necessary for photosynthesis to occur.Light Screen Experiment
Photosynthesis requires light, as demonstrated by an experiment with a light screen. Then potted plants were taken and starved. Next, one of the leaves of the starving plant is affixed with a black paper or a Ganong light shade. The light screen on the Ganong is a motion-transmitting device that only permits light to travel through a small portion of the free air. Now, the plant spends many hours in the sun. After that, the leaf is taken off, and the starch is examined. The non-starchy area stays colourless while the starchy area becomes blue. Furthermore, only leaves that are under direct sunlight become blue. The portion of the leaf exposed to sunlight had good results for the production of carbohydrates. The portion that is covered and shielded from the sun doesn't produce carbs. This leads us to believe that photosynthesis requires sunshine.Photosynthetic unit (PSU)/Light-Harvesting Complex (LHC)/Quantasome
The units of photosynthesis known as quantasomes were identified by Roderick B. Park. They are found in the chloroplast's thylakoid membrane and are made of lipids and proteins. When light is converted into chemical energy, this is the smallest group of pigment molecules involved. Their reaction, photo, or trap centres are always made up of a single chlorophyll molecule that consumes pigments that absorb light.Photosynthetic Pigments:
Three main types of photosynthetic pigments are as follow:
I. Chlorophylls
II. Carotenoids
III. Phycobilins
Non-Cyclic Photophosphorylation
Another name for it is Z-scheme. It is made up of PS I and PS II. Chlorophyll-a 660, 673, 690, Chlorophyll-b, Chlorophyll-c, or Chlorophyll-d, carotenoids, and phycobilins make up Photosystem II (PS II). Phytoplankton A 680 is the response centre. In stromal lamellae, it occurs. NADP+ takes the electron instead of it going back to the reaction centre. When water is photolyzed, electrons are used, which results in the production of NADPH2 and ATP.