Photosynthesis In Higher Plants | One Liner Question |

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PHOTOSYNTHESIS IN HIGHER PLANTS 1. Which metal ion is a constituent of chlorophyll?a. Ironb. Copperc. Magnesiumd. Zinc 2. Which pigment acts directly to convert light energy to chemical energy?a. Chlorophyll ab. Chlorophyll bc. Xanthophylld. Carotenoid 3. Which range of wavelength (in nm) is called photosynthetically activeradiation (PAR)?a. 100 – 390b. 390 – 430c. 400 – … Read more

Vitamins

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Vitamins Water-soluble vitamins Fat-soluble vitamins Water-soluble vitamins Vitamin B1 (Thiamine)Vitamin B2 (Riboflavin)Vitamin B3 (Niacin)Vitamin B5 (Pantothenic acid)Vitamin B6 (Pyridoxine)Vitamin B7 (Biotin)Vitamin B9 (Folic acid)Vitamin B12 (Cobalamin)Vitamin C (Ascorbic acid) Fat-soluble vitamins Vitamin A (Retinoids)Vitamin D (Calciferol, 1,25-dihydroxy vitamin D)Vitamin E (Tocopherol)Vitamin K

Photorespiration And Dark Respiration

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PHOTORESPIRATION PHOTORESPIRATION first demonstrated by Decker in 1955 and 1959. ‘The Photorespiration defined as “the Respiration that occurs in green cells in the presence of light resulting into excess evolution of CO2” OR “The release of CO2 in Respiration in presence of light.” Always required light to perform. The photorespiration rate of reaction takes place … Read more

Plant Hormones

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Plant Hormones In 1905, the British physician E. H. Starling introduced the term hormone Plants are multicellular complex organisms, to grow themselves they require coordination between cells about their activities, cells must be able to communicate with each other. So the principal means of intercellular communication within plants are the hormones. Hormones are molecular signals that … Read more

Chlorosis – Causes of chlorosis, Iron Chlorosis & Etiolation

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Chlorosis: A deficiency of chlorophyll (natural compound present in green plants that gives them their color) causes chlorosis, a yellowing of leaf tissue. Poor drainage, damaged roots, compacted roots, high alkalinity, and nutrient shortages in the plant are all possible causes of chlorosis. Nutrient deficits can result from a lack of nutrients in the soil … Read more

Roles Of Essential Mineral Elements

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 Essential Mineral  Elements Macronutrients: N, K, Ca, Mg, P, and S Micronutrients: Cl, Fe, B, Mn, Zn, Cu, Mo, and Ni Specific Roles of Essential Mineral  Elements Macronutrients  ” Nitrogen”  Proteins, nucleic acids, porphyries (chlorophylls & cytochromes) alkaloids, some vitamins, coenzymes have an important constituent i.e. Nitrogen.  Nitrogen also plays a very important role in … Read more

Photosynthesis And Respiration

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PHOTOSYNTHESIS  It is an anabolic process. Carbohydrates are synthesized. Light energy is stored in the form of glucose or chemical energy. The amount of CO2 in the air decreases during photosynthesis. It takes place only in chlorophyllous cells. It occurs only in the light. The dry weight of the plant increases. Photophosphorylation occurs. 6CO2+12H2O——–> + … Read more

Respiratory And Photosynthetic Quotient

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RESPIRATORY QUOTIENT The ratio of the volumes of CO2 liberated and O2 used during respiration in a given period of time. Also called the respiratory coefficient. PHOTOSYNTHETIC QUOTIENT   The ratio of the volumes of O2 evolved and CO2 absorbed during photosynthesis in a given period of time. DIFFERENCE BETWEEN RESPIRATORY QUOTIENT AND PHOTOSYNTHETIC QUOTIENT  Respiratory … Read more