Original video: https://youtu.be/Gm9VcghaXas
Delivered on: 25 APRIL 2022
This video explores the intriguing process of photorespiration in plants, an alternative metabolic pathway that occurs alongside photosynthesis, particularly in C3 plants. 🌱 We'll delve into the causes, consequences, and molecular mechanisms of photorespiration, and how it affects plant efficiency.
What you'll learn:
Seed Development: We'll trace the journey of seed development, from pollination and fertilization to embryo development and seed maturation.
Seed Structure: Explore the internal and external anatomy of seeds, including the embryo, endosperm, cotyledons, and seed coat.
Seed Function: Understand the key functions of seeds, including protection, nourishment, dispersal, and survival in harsh environments.
Seed Viability and Vigor: Learn about the concepts of seed viability (alive or dead) and vigor (healthy and active), and how to assess seed quality.
Orthodox vs. Recalcitrant Seeds: Discover the difference between orthodox seeds (tolerant of drying) and recalcitrant seeds (sensitive to drying) and their storage implications.
Seed Lifespan and Storage: Explore the classification of seed lifespan (microbiotic, mesobiotic, macrobiotic) and factors affecting seed longevity.
Seed Dormancy: We'll delve into the phenomenon of seed dormancy, where seeds fail to germinate even under optimal conditions, and discuss its causes and ecological significance.
Photorespiration Quiz:
1. What reaction and where CO2 are produced again in photorespiration?
2. How to increase photorespiration?
3. How to reduce photorespiration?
4. Which organelle the enzyme glycine decarboxylase complex is present?
5. From where amino group comes from during the conversion of glyoxylate to glycine in peroxisome?
6. Not all things are bad, give 2 benefits of having photorespiration in plants.
Keywords: Plant physiology, photorespiration, photosynthesis, C3 plants, Rubisco, carbon fixation, oxygenation, chloroplasts, peroxisomes, mitochondria.
Attribution 4.0 International — CC BY 4.0 - Creative Commons
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