oxygen. Photon Light is electromagnetic radiant energy and travels as tiny particles called photons. A discrete Physical unit of light energy. Photoperiodism The response of plants to the photoperiod expressed in the form of flowering.
Phylogeny Evolution of group of organisms Phytochrome A photo reversible proteinaceous plant pigment in very low concentration that absorbs red and far red light which controls flowering. Pistillode Sterile pistil Pitted thickening Uniformly thick except at their pits Plasmogamy Fusion of cytoplasm Pluriocular An ovary with two or more locus Preparatory phase First half of glycolysis comprising five enzymatic reactions in which one molecule of glucose splitting into two molecules of glyceraldehyde phosphate with consumption of two ATP molecules. Prickles Stiff and sharp outgrowth Prophage The integrated phage DNA with host DNA Protologue Set of information associated with the scientific name of a taxon at its first valid publication containing the entire original material regarding the taxon Quantasome Morphological expression of physiological photosynthetic units, located on the inner membrane of thylakoid lamellae. Act as photosynthetic unit contains to chlorophyll molecules.
Quantum The energy contained in a photon is represented as quantum Quantum requirement The number of photons or quanta required to release one molecule of oxygen during photosynthesis Quantum yield The number of oxygen molecules produced per quantum of light absorbed. Quiescent centre concept Inactive region of root meristem Rachilla Central axis of a spikelet Radial vascular bundles Xylem and phloem present on different radii Ray Parenchyma Parenchyma cells arranged in radial rows Redox reactions Oxidation (loss of electrons) and Reduction (gain of electrons) reactions are called redox reactions. Reduction CO2 is reduced into Carbohydrates (gain of electrons) Rib-meristem Meristem which divides anticlinally in two planes RUBISCO Enzyme responsible for fixation of Carbon dioxide, the most abundant protein (Ribulose , bisphosphate Carboxylase Oxygenase) Salt stress Adverse effects of excess mineral salts on plants Sap It is a fluid consist of water and dissolved minerals Slime body A special protein (Phloem Protein) in sieve tubes Sporophyte Diploid plant body Stellate hairs Star shaped hairs Stratification A process