Dictionary of Auxospore, Dictionary of Azygospore, Auxotroph, Available Space Theory, Awn, Axeny, Axenic Culture, Axial, Axil, Axile Placentation

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Botany Dictionary Botany Dictionary - Part 1 A - Acrostichoi Sorus Actinomorphic of Flowers - Air Layering Akaryote - Amino Acid Amino Acid Swquencing - Antheridial Cell Antheridial Filament - Arabinose Archegoniophore - Auxins Auxospore - Azygospore B - Biflavonyls Bigeneric - Brachyscleried Bracket Fungi - Buttress Root C3 Plant - Carrier Caruncle - Chemosterilant Chemosynthesis - Cladogenesis Cladogram - Campensation Period Compensating Point - Corona Corpus - Cyanogenesis Cyanophycin - Cytotaxonomy 2,4-D - Dermatosome Desmolases - Dinucleotide Dioecious - Dynein

Home >> Botany Dictionary >> Auxospore-Azygospore

Your Ad Here	Auxospore - A rejuvenescent spore which is produced under adverse environmental conditions lby some diatoms. When it is produced by pennate diatoms, formation is generally associated with sexual reproduction, by the enlargement of a zygote or parthenogenetic gamete. Auxotroph - A type of biochemical mutant which can grow normally when provided with supplement in the diet for replacing the substance which it cannot form itself e.g., certain mutant of Neurospora crassa require arginine in culture to grow normally.
Available Space Theory - According to this theory origin of new leaf primordia at a stem apex has been governed physically by the amount of space available between existing primordia. Further, the origin of a primordium requires a certain minimum amount of space and such a space is usually between penultimate primordium and the one formed previous to that. See also repulsion theory, phyllotaxis. Awn - (i) A bristle present on the flowering glumes of the Graminae. (ii) A long thread-like outgrowth on certain fruits. Axeny - Used for the resistance of a plant to a pathogen, without the presence of morphological barriers. 'Passive' resistance.
Axenic Culture (Pure culture). Used for culture having only one type of organisms or cell. It is derived from pure parent culture and is made to grow under sterile condition. Axial - Used for describing cell which are derived from fusiform initials and are elongaled paralled to the long axis of an organ. All these cells are collectively known as axial system. Axil - Describing the angle between upper surface of a leaf or other similar structure and the axis on which it gets attached. Axile - Used for describing position of chloroplast which is situated on the central axis of the cell.	Your Ad Here
Axile Placentation - A type of placentation occurring in a multicarpellary, syncarpous, multiocular ovary in which placentae are arising from central axis of the ovary; one is present in each locule of the ovary. Axillary - Used for describing the position of an organ like bud, inflorescence, flower, meristem etc., in the axis of a leaf or other similar organ. Azygospore - Azygospore which is formed parthenogenetically, and is a resting spore. The term has been sometimes confined to zygospores formed from gametes.

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Botany Dictionary - Part 2 Earth Stars - Endoplasmic Reticulum Endosperm - Eukaryotic Eumitosis - Eyespot F - Fission Fungi Fission Yeasts - Fraction I Protein Fragmentation - Fusiform Initials G1 Phase - Geoplagiotropic Geotaxis - Golden Brown Algae Golgi Apparatus - Gynophore H - Heterandrous Heteroblastic Development - Histogen Theory Histology - Hypocotyl Hypoderm, Hypodermis - Hypotrophy Indian Institute of Astrophysics Bangalore Intercalary Meristem - Isthymus Jacket - Juvenility Kampf Zone - Krummholz Labelling - Leaf Spot