Plant Physiology and Metabolism
BOT-DSM-511 · BSc 5th Semester · UGC NEP · Theory · 60 hours · Personal study site, English medium
This site teaches the whole syllabus, not just the class notes. Your 46-page handwritten notes were strong on growth regulators, membrane transport and photophosphorylation — but Unit 2, Unit 4, respiration, photoperiodism, phytochrome, vernalization, water potential and essential elements were missing or only partly covered. Those gaps are taught here from scratch.
Diagram for every concept: all 57 topic sections now have at least one figure (57/57), and 39 of those sections are illustrated with a real sourced image: the site now holds 53 openly licensed Wikimedia Commons images in its assets folder, with hand-coded SVG diagrams and flowcharts retained only where no suitable open image was found. Every mechanism is shown as a visual sequence, not text alone.
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Units
Unit 1 — Plant-Water Relations and Mineral Nutrition (14 hours)
Water potential, transpiration, root pressure, guttation, essential elements, ion transport.
Notes: transport strong, water/minerals missing
Open Unit 1Unit 2 — Translocation in Phloem (12 hours)
Phloem sap, girdling experiment, pressure flow model, loading and unloading.
Notes: missing — taught from scratch
Open Unit 2Unit 3 — Photosynthesis and Respiration (12 hours)
Pigments, photosystems, Z-scheme, C3/C4/CAM, photorespiration, glycolysis, TCA, oxidative phosphorylation, glyoxylate cycle, PPP pathway.
Notes: photophosphorylation partial, respiration missing
Open Unit 3Unit 4 — Enzymes and Nitrogen Metabolism (12 hours)
Enzyme structure, catalysis, inhibition, nitrogen fixation, nitrate and ammonia assimilation.
Notes: missing — taught from scratch
Open Unit 4Unit 5 — Plant Growth Regulators and Light/Temperature Responses (10 hours)
Auxins, gibberellins, cytokinins, ABA, ethylene, photoperiodism, phytochrome, vernalization.
Notes: regulators strong, light/temperature missing
Open Unit 5Quiz Corner — new
Practice by unit (15/15/20/15/18), a 20-question mixed challenge, the 10 Dec 2025 PYQ MCQs, and a 10-question speed quiz in 10 minutes. Best scores are saved in this browser only.
Open Quiz CornerStudy roadmap — in PYQ-priority order
The Dec 2025 paper (60 marks, 3 hours) was mechanism-heavy in Section C: transpiration pull, nitrogen fixation, pressure flow, Z-scheme and oxidative phosphorylation. Work in this order if time is short:
- Mechanisms first: pressure flow (Unit 2), Z-scheme and oxidative phosphorylation (Unit 3), nitrogen fixation (Unit 4), transpiration pull (Unit 1).
- Definitions and components next: water potential, phloem sap, enzyme catalysis, Pr/Pfr (Section B topics).
- Comparisons: C3/C4/CAM, active vs passive transport, SDP/LDP/day-neutral, inhibition types.
- Then practise: the MCQ quiz, the Dec 2025 paper, and one model paper under timed conditions.
How to use this site
- Each unit page has a definition box, a detailed explanation, diagrams and flowcharts, exam traps, 5-mark short notes and 10-mark long answers.
- Use the search box on each unit page to filter topics. Tick the checklist at the bottom of a unit page — your progress is saved on your own device only (localStorage, no login).
- All images are stored in
assets/images/and credited on the Credits page. Diagrams drawn for this site are labelled as such. - Open
index.htmlby double-clicking it. No server, login, payment or ads are needed.