Competitive Exams: Revision Terminology Part 17

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  • Diffusion – Solute higher Low concentration Areas more disorder
  • Ration of diffusion
  • In O. P. = Concentration of solute , if solute ionize in solution, if solute hydrated , if temperature increment
  • Cells of inner cortex of root Possess more O. P. than outer cells.
  • Plasma member act as differentially permeable member tonoplast & Cytoplasm.
  • Bacteria do not sunrise in salted pickles kerosene oil & swells.
  • Dry seeds, Velamen roots, cell walls Absorb water by imbibition
  • At low temp – water freeze to ice having high O. P. cause exosmosis of water = Desiccation
  • Marine Fresh burst endosmosis.
  • Fresh Marine dies exosmosis
  • Active process – respiration for guttation & bleeding plants
  • Bursting of cell in pure water (Solvent) is called plasmolysis
  • Osmotic – no energy involved
  • Non osmotic – involves energy
  • Guard cells have both PS I & II but Cannot assimilate CO2 because of the absence of (1) Ribulose Biphosphate Carboxylase
  • (2) NADP linked triose phosphate dehydrogenase
  • So heterotrophic
  • Transpiration in old stem & Fruits – Lenticels.
  • Fresh/dry W + of plants – maximum in morning & minimum in noon.
  • Plants at high altitude show xeromorphic (adaptation to minimize transpiration)
  • Of leaf = transpiration flax.
  • Chloroplast of guard cell peripheral reticulum like that C4plants.
  • Chloroplast of guard cell grana developed & have large starch accumulation when closed in most plants.
  • If half stomata of plant closed then transpiration is not reduced by half.
  • Plant from sea level Mountain (Transpiration rate increment & it may die) .
  • Blue light keep stomata open during & day & promote movement of K + into cells.
  • Co2 anti-transpirant ⇾ ABA, PMA,
  • Higher temp Cause higher respiration leading to higher loads of CO2 which cause stomata closure
  • Stomata (Leftfield) ⇾ According to daily movements
  • Alfalfa – open whole day, closed at night – pea radish mustard turnip apple grapes
  • Potato – open whole day, & night except few evening hours – onion potato banana.
  • Barley – open only few hour in day – maize, wheat & other Cereals.
  • Equisetum – always-open – Blue max open stomata.
  • Red & Blue = active spectra of transpiration.
  • Photometer = measure rate of transpiration
  • Porometer = assess total pore area (stoma)
  • Curtis – Transpiration is necessary evil.
  • If ground cell loss water – flaccid – inner wall Sags & pore closes
  • High temp (above 35 degree C) cause high loads of CO2 – Cause stomata closure
  • Scotoactive stomata – succulent (open in night) – Bryophyllum, opuntia, cactus
  • DDT = insecticide Discernment Dr. muller (1939) 1st by German student
  • 2,4 – D Herbicide
  • Malathion Flit antimalarial program
  • Biofuels = Renewable
  • organophosphate act of CNS combine with phosphors of Cholinesterase & inhibit it in process of nerve gas in world war II
  • First bioinsecticede = Sporiene.
  • First bio herbicide = mycoherbicide – phyfthora plamivora.
  • Hardwood is better than Soft wood.

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