Photosynthesis in Higher Plants Notes PDF for High Scores in NEET Biology






FAQs on NEET Biology Photosynthesis in Higher Plants Class 11 Notes
1. Which pigment traps solar energy in plants?
Chlorophyll A, B, C, and D are the green pigments that trap the solar energy in the sunrays.
2. Which gas is required for photosynthesis to synthesise glucose?
Plants need carbon dioxide to synthesise glucose in their leaves.
3. Which gas is the by-product of photosynthesis?
Oxygen is the by-product of photosynthesis. It is produced due to the breakdown of water molecules during the chemical reactions of photosynthesis.
4. What are photosynthetic pigments?
The biochemical substances that can trap solar energy emitting from the sun and convert it into energy to use for promoting various biochemical reactions are called photosynthetic pigments.
5. What is the important note of photosynthesis in higher plants?
Higher plants perform photosynthesis in specialized organelles called chloroplasts. These chloroplasts contain chlorophyll pigments that trap sunlight to fuel the process. This light-driven conversion of carbon dioxide and water into organic molecules (primarily glucose) is the foundation of most life on Earth, as plants provide the base of the food chain for most ecosystems.
6. What are the important points of photosynthesis in plants?
Light Dependent Reactions (Light Phase): Capture light energy and convert it into ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).
Light Independent Reactions (Calvin Cycle): Use the energy from ATP and NADPH to fix carbon dioxide into organic molecules (sugars).
Location: Occurs primarily in the mesophyll cells of leaves.
Gas Exchange: Takes in carbon dioxide (CO2) and releases oxygen (O2).
7. Which plant has a high rate of photosynthesis?
Plants with C4 photosynthetic pathways, like corn and sugarcane, generally have higher rates of photosynthesis compared to plants with C3 pathways like most trees. C4 plants have a more efficient way to capture CO2, which can be limiting in hot and dry environments.
8. Where are ATP and NADPH used?
ATP: Provides energy for the Calvin Cycle to fix carbon dioxide into organic molecules.
NADPH: Supplies electrons and hydrogen ions for the Calvin Cycle to convert CO2 into sugars.
9. Can photosynthesis occur without sunlight?
No, sunlight is essential for photosynthesis. Light energy provides the power to drive the light-dependent reactions that generate ATP and NADPH, which are necessary for the Calvin Cycle to fix carbon dioxide.











