SOLUTION OF LECTURER GIC EXAM 2009

• 131- Cobalt-60 is used extensively in industry and in radioisotope therapy
• 142- Houston is the center of the national petroleum industry. D
• 30- The drugs bhang, hashish, and marijuana contain as their principal component narcotic resins found mostly in the glandular hairs of the plants. –B- family Moraceae. Hemp is classified as Cannabis sativa.
• 16- cadmium wastes the Mitsui Metal and Mining Company was the direct cause of the extremely painful and often fatal itai-itai (ouch-ouch) disease suffered by many nearby residents. B
• 13- Cinchonas belong to the family Rubiaceae. B
• 66- Date palms belong to the family Arecaceae (formerly Palmae). The common date palm is classified as Phoenix dactylifera, the sugar date palm or toddy palm as Phoenix sylvestris, the blue date palm as Phoenix zeylanica, and the pygmy date palm as Phoenix roebelenii. C
• R/ A sugary sap, called toddy, can be obtained from the flower buds. The palmyra palm is a member of the family Arecaceae (formerly Palmae). It is classified as Borassus flabellifer.
• 67-The clove tree belongs to the family Myrtaceae. It is classified as Syzygium aromaticum.B
• 84- Mahoganies belong to the family Meliaceae. True mahoganies are classified in the American genus Swietenia and the African genus Khaya. The chinaberry tree is classified as Melia azedarach. D
• 2-The gynostegium is a typical feature of members of the Milkweed family- D
• 3-Dendrology concerns tree identification, distribution, age determination, and species characteristics. C
• 4- A cyathium (plural: cyathia) is one of the specialised pseudanthia ("false flowers") forming the inflorescence of plants in the genus Euphorbia – D
• 5- Syconus develops from hypanthodium having a pear shaped receptacle which become fleshy and bears numerous achenes in inner surface e.g. fig, banyan etc –D
• 6- Xylem presumably with tracheids; without vessels – Winteraceae D
• 7-amphivasal vascular bundle: one in which the phloem is surrounded by xylem –D
• 8- In Selaginella trabeculae are the modification of Endodermis as they have casparian strips on the cells – C
• 9- Simpile tissue - C
• 10- Many plants like gymnosperms and dicots have extensive lateral meristems (the cambium, the vascular cambium, and the cork cambium) that give rise to growth in girth, also called secondary growth. – D
• 11- Callose is a plant polysaccharide. It is composed of glucose residues linked together through β-1,3-linkages, and is termed a β-glucan a carbohydrate in plant cells that plugs the sieve pores when the sieve tubes stop functioning. D
• 12-tracheid a water conducting and supportive cell type of xylem composed of long, thin cells with tapered ends – A
• dictyostele a dissected siphonostele with two or more overlapping leaf bases
• 13- Cinchona Officinalis, also known as Quinine, Rubiaceae- B
• 14- A eutrophic body of water, commonly a lake or pond has high primary productivity due to excessive nutrients and is subject to algal blooms
• An oligotrophic lake is a lake with low primary productivity –A
• 15- The commonly observed high diversity of trees in tropical rain forests and corals –C
• 16- cadmium wastes the Mitsui Metal and Mining Company was the direct cause of the extremely painful and often fatal itai-itai (ouch-ouch) disease suffered by many nearby residents. B
• 17- In the genetic code, a stop codon (or termination codon) is a nucleotide triplet within messenger RNA that signals a termination of translation. –D
• 18- Heterocyst and Nitrogenase Heterocysts are thick walled specialized cells ... pores called polar nodules which contain enzyme (in BGA) nitrogenase - C
• 19-CHLOROPHYLL SOLUTION FLUORESCE
• 20- plant hormone – b
• 21- sigma facter –a
• 22- penicillin – a
• 23- Inteins are selfish DNA elements inserted in-frame and translated together with their host proteins. – C
• 29- nannandrous Oedogonium taxa (O. eminens,. O. undulatum, O. sp. ... including all dioecious nannandrous and monoecious Oedogonium taxa with bootstrap – D
• 34- Meristele: one of the bundles of a dictyostele – C
• 39- The northern blot is a technique used in molecular biology research to study gene expression by detection of RNA – C
• 42- The neoplastic diseases crown gall and hairy root are incited by the phytopathogenic bacteria Agrobacterium tumefaciens and Agrobacterium rhizogenes – A
• coenocytic algae Vaucheria
• Photolyases (EC 4.1.99.3) are DNA repair enzymes that repair damage caused by exposure to ultraviolet light.
• The toddy palm (genus Borassus
• In evolutionary ecology, an ecotype (Greek: οίκος = home and τύπος = type, coined by Göte Turesson in 1922^[1][2]) describes a genetically distinct geographic variety, population or race within species (or among closely related), which is adapted to specific environmental conditions.^[3][4] Typically, ecotypes exhibit phenotypic differences (such as in morphology or physiology) stemming form environmental heterogeneity^[5] and are capable of interbreeding with other geographically adjacent ecotypes without loss of fertility or vigor.^[6]
• Cephaleuros Species, the Plant-Parasitic Green Algae
• Karyotype is a test to identify and evaluate the size, shape, and number of chromosomes in a sample of body cells.
• endomitosis /en·do·mi·to·sis/ (-mi-to´sis) reproduction of nuclear elements not followed by chromosome movements and cytoplasmic division – B
• hinged DNA structure (H-DNA) which is composed of triple-stranded and single-stranded regions.- A
• A filament arising from the fertilized carpogonium of most red algae.-A