Competitive Exams: Revision Terminology Part 10

Artificial classification

  1. Theophrastus – herb, Shrub & trees

  2. John Ray – herb into two that is Perfectae (flowering) and Imperfectae(non – flowering), John Ray 1st to divide in monocot & dicot.

  3. Camerarius – proved pollen necessary for seed formation.

  4. Carolus Linnaeus (Swedish) – based on number of stamens & their arrangement in flower

Natural System

  1. AL de jussien – genera planetarium – cotyledons, petals & stamens

  2. Robert Brown – Gymnosperm – naked ovule & seeds

  3. De Candolle – Vasculares (Vascular with cotyledon), cellulare (Vascular bundle absent)

  4. Bentham & hooker – gymnosperm in between monocot & dicot

Betham Hooker Classification ~ Understanding plant classification by Bentham & Hooker

Understanding plant classification by Bentham & Hooker

Betham Hooker Classification

Understanding plant classification by Bentham & Hooker

Understanding the phylogentic system

Phylogentic System

Understanding the phylogentic system

  • Floral chromosome = Basis of classification – floral features are conservative then vegetative -> venation is relied on classification for angiosperm

  • World’s largest herbarium – Royal Botanical Garden, Kew, England.

  • India’s largest herbarium – Calcutta (13-lakh specimen).

  • Solidago (Compositae) for dropsy

  • Labiatae = Mint family, Verticellaster inflorescence – sweet aromatic small

  • Photo autotrophic nutrition = Holophytic nutrition

  • Neottia – Bird nest orchid – humus rich soil – ectotrophic mycorrhiza

  • Monotropa – Indian pipe – humus rich soil – endotrophic mycorrhiza – pine forests

  • Dischidia = Pitcher plant but not insectivores.

  • Intervenial chlorosis – in young leaves – Fe

  • Intervenial chlorosis – in old leaver – mg

  • N2 defeciency – 1st chlorotic in older leaver.

  • Gold present in stem of Equisetum.

  • Prokaroyotes – utilize elemental N2 gas

  • Photolysis of H2O = Mn.

  • Al present in ferus & Lycopedium Siltica – grass & diatoms

  • Zn – little leaf disease of cereals, Exanthema of fruits, Mottle leaf of citrus, white leaf of maize, sickle leaf of cocoas.

  • S – tea yellows

  • Mo – Whiptail of Brassica, Scald of Beans, water core in turnip.

  • Mn – Speckled yellow of beet, Marsh spot of peas, grey speck of oats.

  • B – Heart rot of sugar beet, corky coke of apple, top sickness of tobacco, Celery stem crack, Brown heart or water core in turnip, Brown heart of cauliflower.

  • Cu – Die back of shoots

  • Cl – wilting of leaf tip followed by chlorosis, bronzing & necrosis basipetally in areas of proximate to wilting

    Understanding the role of nitrogen fixing bacteria’s

    Nitrogen Fixing Bacteria

    Understanding the role of nitrogen fixing bacteria’s

  • Leg Hb – produced during maturation of reservoir of O2 & production of ATP, nodules keeps away O2 from nitrogenase

  • Membrane permeability – N2 & Ca

  • Nitrate reductase – Mo/flavorprotein

  • Nitrite reductase – Ferrodoxin.

  • Apoplast – nonliving, cellulosic cell wall, intercellular space(epidermis to xylem) – diffusion

  • Symplast – living, cytoplasm & plasmodesmate, active transport.

  • Hydrophonics – placing the roots in nutrient solation.

  • Aerophonics – growing plant in moist air laden with nutrients (Cytozyme – H2O soluble)

  • Liebig law of minimum – yield is determined by element present in minimum quantity in proportion to Lundergardh’s Cytochrome pump hypothesis – absorption of anion only immobile elements – Ca, S, Fe – Deficiency symptoms in young leaves. states that growth is controlled not by the total amount of resources available, but by the scarcest resource

  • Co – Algae, Microbes.

  • Na – Halophytes, Cu Pathway.

  • I2 – Marine algae.

  • Mo – needed in least quantity.

  • Plant ash – Contains oxides & Carbonates of elements

  • Most active free ion = K+

  • Sink is a region in which plant utilize a substances Translocate.

  • Bidirectional Translocation of minerals = Xylem.

  • Fall of immature leaf – deficiency of zinc.