Plant Biology PDF
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This document provides information on the internal structure of a chloroplast and its role in photosynthesis. It also discusses the functions of plastids and mitochondria.
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ohoto$Yntheti6 membl'aries \rjith rhialoohyli envelope {nem- Stroma Lamellae i:r'anesl Thylakoid circular DNA ribosomes starch grain Stroma lntermembrane SPace lnternal structure of chloroplast' Granum is the site of light reacti-on during photosynthesis' r'rrhiie stfolT'a is the site of dark during...
ohoto$Yntheti6 membl'aries \rjith rhialoohyli envelope {nem- Stroma Lamellae i:r'anesl Thylakoid circular DNA ribosomes starch grain Stroma lntermembrane SPace lnternal structure of chloroplast' Granum is the site of light reacti-on during photosynthesis' r'rrhiie stfolT'a is the site of dark during PhotosYnthesis' F i*ne?i*ns: functions: Plastids perf orm the foliowing plant' it to manufacture food for the 1. Chloroplasts trap solar enelgy and utilises for pollination' colours to flowers to attract insects 2. 3. ChromoPiasts irnpart various f ats and Protein' of carbohYdrates (starch), LeucoPlastsstore f ood in the form and chloropiasts Differences between mitochondria : OCCUI l. (plants and nrammailan RBCs. aerobic organisms 1. the excePtion of green TheY occur in the cells of parts (e.g., leaves) of Plants' 2. TheYare greenln colour. 2. Thev are colourless. 3. TheYaregenerallY disc-like in outline' sacs called sausage-shaPed. or rod-like is shaPe The 3. is t\. Their inner membrane forms flattened mitochondrion each of mernbrane Inner thylakoids orlameilae. it into throw'ninto {o1ds ca1led cristae' 5. TheY traP solar ener gv and convert energY 5. Therrliberate chemicalenergY 6. 7. TheYPerform oxidation of food" Theyconsume O, and liberate COr' L food bY PhotosYnthesis' and liberate C,' and membrane-bounded are fluid-filied or solid-filled Nature and occurrence. \'acuoles are small and temPorarY cells, the vacu oles if Present animal In sacs. u'l:i''1.'"i: The-v are a kinti a single unit membrane - ' '-" : ': The vacuolar membrane is typicallY r-oqc:l 'l glr or atcl', \^ store balance (e'g ,, they serve as osmoregulatorY water of n:'ain'telrauce the often associated u'itl-r vactiole of a single material (fooci. vacuole) Thus, food uutrier't of ingestion or in protozoans) The Fundomentcl 38 I of
