Practical Exam – Bio 125 Lab

laboratory Due November 14, 2012 Practical Exam 1. a. The symbionts (paramecia) of the white ant belong to the kingdom Protista b. Paramecium living in the intestines of termites breaks down the cellulose walls of woodlandwind instrument fibers releasing proteins that are absorbed by the termites digestive sy al-Qaida. Paramecium benefit by having an environment to thrive and they ingest the wood fibers for their own nutrition as well. 2. c. An main(prenominal) ecological effect of diatoms is that when they die they stem onto CO2 trapped inside their ti skeleton, carrying it to the ocean floor instead of universe released into the atmosphere. . Autotrophic 3. deuce characteristics that helped identify the euglena were e. dickens flagellas. f. Eyespot. 4. g. The bacteria in the picture denominate 4 is rod-shaped. h. Cyanobacteria are all-important(prenominal) producers of Nitrogen in marine environments. 5. i. Lactobacillus erect in saliva produced lactic acid to cause Snyd ers medium to assortment color in. j. The tube turned yellow afterward it was exposed to saliva. 6. k. Red algae meet phycobilin pigments (phycoerythrin and phycocyanin) that mask the color of the chlorophylls.Brown algae establish xanthophyll pigments that mask the green color of the chlorophyll. Green algae b extinguish cholorphylls a and b that give a glossy green color. l. All algae wee chlorophyll. 7. m. The hyphae of Rhizopus are coenocytic. n. Gametangia (hyphae fuse), plasmogomy occurs, karyogamy occurs forming Zygosporangium, sporangium form and monoploid spores are released to germinate and form hyphae. 8. o. The help of gills in basidiomyctes is to produce spores. p. Basidiomycetes have got crosswalls (they are septate). 9. q. Yeast produces CO2, which makes dough rise. .Yeast process alcohol in brewing. 10. s. In mosses, the leaflike green structure is the gametophyte. t. Gametophytes are haploid. 11. u. The ready pictured and tagged number 11 has vascular tissue. v. Sori are the sporangia structures pitch on the undersides of the fronds. 12. w. The cone labeled 12 is a female cone. x. The needle-like leaves of gymnosperms reduce the surface area, and blockheaded cuticle and sunken stomata minimize water system loss. 13. y. Body plan (c) shown on chalkboard labeled 13 represents an acelomate. z. Hydras and jellies exhibit radial-ply tire symmetry. 4. . Eyespots in flatworms like planaria incur light and use them to move forward from light sources. . The concentration of sense electric organs at the anterior of this existence is cephalization. 15. . Annelids such as the Earthworm, which was dissected in lab, have closed circulatory systems. . The digestive bundle is complete because the digestive tract runs from oral cavity to anus.16. . The clitellum of the Earthworm is used in familiar reproduction. . Coelom in Earthworms aid in locomotion and function as a hydrostatic skeleton. 17. The function of hemolymph in an organi sm such as the Grasshopper is to direct nutrients. . Insects have 3 pairs of walking legs. 18. . spiny lobster have an open circulatory system. . staminate cray search are generally larger than females and have bigger claws. Also in male crayfish the two some anterior swimmerets are enlarged and hardened. 19. . The catch ones breath is a vertebrate. . The lateral line organ is used to sense vibrations and pressure differences in water. 20. . The swim bladder in the fire up is used to maintain buoyancy. . Caudal tail fin is primarily responsible for propelling the fish forward. 1. . The front position of the mouth in the Perch is advantageous because it allows the Perch to eat and take in water as it swims forward. . No, most fish enforce immaterial fertilization to sexually reproduce.22. . Rat belongs to build Mammalia. . Possess hair made of keratin. 23. . Yes, cephalization is obvious in the rat. . Cephalization is the concentration of sense organs at the anterior of an organism. 24. . Rat has a closed circulatory system. . Most rats utilize internal fertilization during sexual reproduction. 25. In plants the apical meristem can be found at the . Root tips Shoot tips 26. . The experiment of a Carnation placed into a beaker full of water and red prov nullifyer coloring demonstrated cohesion, adhesion and capillary vessel action (transpiration) of water through the stem. . Xylem is the vascular tissue mainly involved in this process.27. . The leaves on blackboard labeled 27 are compound. . The leaves are from a dicot because they are arrange in volts. 28. . The picture on blackboard labeled 29 is a monocot leaf. . The forebode of the cell at the end of the cursor is a guard cell. 29. . The picture on blackboard labeled 29 is the stem of a dicot. The vascular bundles are arranged in a ring in the cross-section of the stem. 30. . The secondary xylem growth peal of the woody stem can be counted to determine the age of a tree. . In the picture on b lackboard labeled 30, the function of the structure at the end of the arrow is active xylem. This allows for water fare in the tree. Extra Credit 31. Two structural hallmarks of organisms classified mollusks are healthy foot and mantle. 32. . Rhotifer is the smallest animal that has tissues and organs/organs systems. . The majority of these organisms reproduce by parthenogenesis.