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جامعة بنها كلية العلوم قسم النبات امتحان مقرر مورفولوجى نبات المستوى الثانى شعبة ميكروبيولوجى وكيمياء 2012 يناير22 تاريخ اإلمتحان األحد محمد عبدالسالم على محمد الجاللى/الممتحن د Benha University Faculty of Science Botany Department 2nd. Level (Microbiology & Chemistry.) Plant Morphology Final Examination. 22 Jan. 2012 اإلجابة مظللة باللون األصفر Answer the following questions: I- Choose the correct answer: 1- A velamen tissue which is the spongy structure is present in …………. a- the contractile roots. b- the aerial roots. c- the haustorial roots. d- the prop roots. 2-Lateral roots arise from …………………… of the permanent zone. a- epidermis b- vascular cylinder c- cortex d- pith 3- The mature fertilized ovule is …………………….. a- the fruit. b- the seed. c- the flower. d- the bud. 4- Seed of Chenopodium is : a- exendospermic. b- endospermic. c- perispermic. d- albuminous. 5- Seed coat is hygroscopic in: a- Linum seeds. b- broad bean seeds. c- maize grains. d- cotton seeds. 6- Respiration process in the plant is the main function of…………. a- root. b- leaf. c- stem. d- rhizome. 7- Napiform type of plant roots belongs to ……………… a- primary roots. b- adventitious roots. c- aerial roots. d- haustorial roots. 8- Seed coat elongates into hairs in : a- cotton seeds. b- broad bean seeds. c- maize grains. d- Linum seeds. -1- 9- The subterranean stems are normally grow ……………… a- under the soil surface. b- above the soil surface. c- under the water surface. d- above the water sufface. 10- Haustorial roots are specialized absorbing organs of ……………. a- epiphytic plants. b- symbiotic plants. c- parasitic plants. d- saprophytic plants. 11- The lower portion of the embryo axis from which the root system is formed, is … a- the radicle. b- the plumule. c- the hilum. d- the micropyle. 12- - During seed germination, the physical changes takes place for ……….. a- dead seeds only. b- living seeds only. c- both dead and living seeds. d- none of the above. 13- Cystase enzyme acts on ………………… a- cellulose. b- starch. c- hemicellulose. d- fats. 14- The differentiation of the embryo into the different organs is called ……… a- growth. b- germination. c- development. d- dormancy. 15- A scare marking the place of funiculus attachement to the ovule is known as …. a- hilum. b- radicle pocket. c- micropyle. d- scutellum. 16- What of the following is the external necessities for seed germination ? a- longevity and viability. b- oxygen and temperature. c- embryo and seed coat dormancy. d- none of the above. 17- Some roots perform other functions than the main ones such as ……… a- anchorage. b- absorbtion. c- reproduction. d- both a & b. 18- The corm is a swollen subterranean stem, e.g. ……………… plant. a- Sugar cane b- potato c- sweet potato d- taro 19- In the following, there are some stem functions, what is the modified one? a- bearing the different vegetative organs. b- conduction of the soil solution and the prepared food. c- photosynthesis and storage. d- none of the above. 20- The embryonic shoot bud which grows into the shoot system is called ……….. a- the radicle. b- the flower. c- the plumule. d- the cotyledon. 21- The root hairs arise from ……………….. of the root system. a- the growing point. b- the absorbing zone. c- the permanent zone. d- the elongation zone. 22- Adventitious buds not arise in a normal position on the plant, but they develop on a- stem. b- root. c- leaves. d- both b & c. -2- 23- In the seed stage, there are a plant structures called the seed leaves which are the a- plumule. b- radicle. c- cotyledons. d- seed coat. 24- The plant organ which is usually grows against gravity is ………. a- the aerial stem. b- the subterranean stem. c- the root. d- all the above. Best wishes Dr. Mohammed A. Elgalaly -3-