saline soils and complete their life cycle Heliophytes Plants which are adapted to light Heterospory Production of spores of different sizes: megaspores and microspores Histogenesis Differentiate tissues from undifferentiated cells of meristem Indeterminate growth Plants grow throughout their life Intrastelar ground tissue Tissues within the stele Isomerisation Rearrangement of atomic groups within the same molecule without any loss or gain of atoms. Karyogamy Fusion of nucleus Karyotype Number, sizes, and shapes of the entire set of metaphase chromosomes of a eukaryotic cell. Km A parameter that describes the affinity of an enzyme for its substrate and equals the substrate concentration that yields the half-maximal reaction rate; Leptome Phloem – by Haberlandt Leptosporangiate Sporangium formed from a single initial Lumen Space inside the tracheid/vessel/fibres Malate Shuttle mechanism It is a biochemical system for translocating electrons produced from glycolysis across inner membrane of mitochondrion for oxidative phosphorylation. Mass meristem Meristem which divides in all planes Microgreens Young vegetable greens add flavour in culinary Monograph Complete account of a taxon of any rank Monosulcate Pollen grain with single furrow or pores Mycobank Online database documenting new mycological names Necrosis Death of tissue Non heme iron An iron porphyrin prosthetic group of heme proteins from plant origin Nucleoid Genetic material of bacterium Nutation The growing stems of twiner and tendrils show automatic movement Oogamy Fusion of morphologically and physiologically dissimilar gametes Open vascular bundle Cambium present between xylem and phloem Example: Dicot stem Oxidation Water is oxidised into Oxygen (loss of electrons) PAR The wavelength at which the rate of photosynthesis is more is called ‘Photosynthetically Active Radiations’ which falls between to nm.
Parthenocarphy Fruit developed without fertilization Pendulous Hanging downward loosely or freely (like catkin) Petrifaction A process of fossil formation through infiltration of minerals over a long period pH A measure of the acidity or alkalinity of a solution defined as the negative logarithm of the hydrogen ion concentration in moles per liter Phosphorescence Phosphorescence is the delayed emission of absorbed radiations. Photolysis Splitting of water molecules by light which generate protons, electrons and