+++++++++++++++++++++++++++++++++++++++++++++++++++++ Bio.------full marks (125%) Section B MC(24marks) 1.Which of the following are responsible for the magnification of images in a microscope? (1)Condenser (2)Lens in objective (3)Mirror (4)Lens in eyepiece A (2)and(4)only B (1),(2)and(4)only C (2),(3)and(4)only D all of them 2.How are unicellular organisms different from the more complex organisms? A Unicellular organisms do not respond to stimuli B Unicellular organisms do not reproduce C Unicellular organisms do not have tissues D Unicellular organisms are made up of a number of cells 3.(diagram) 4.When perparing a temporary slide of banana tissue,the piece of banana has to be squashed first.Why? A To reduce water loss of the specimen B To preserves the specimen C To prevent the overlapping of the cells D To release starch from the cells 5.In terms of function,the vascular tissues in dicotyledonous plants are similar to which of the following systems in humans? A Respiratory system B Circulatory system C Excretory system D Digestive system 6.Which of the following shows the correct order of increasing similarity among individuals? A class,genus,species,phylum B genus,species,phylum,class C phylum,class,genus,species D species,phylum,class,genus 7.(diagram) 8.(diagram) 9.(diagram) 10.(diagram) 11.Which of the following reagents,if used to test fresh orange juice,will give a positive results? (1)Benedict's solution (2)Albustix paper (3)DCPIP solution (4)Iodine solution A(3)only B(1)and(3)only C(2)and(4)only D(1),(2)and(3)only 12.Which of the following statements about minerals is correct? A All minerals on the Earth are required by man B Different minerals are needed in different amount C Man will die when there is deficiency of anyone of the minerals in diet D minerals are taken in elemental form 13.(diagram) 14.Which of the following statement is FALSE? A Vitamin C helps to build up resistance in infections B A diet lack of dietary fibre may lead to constipation C Vitamin D affects the absorption of calcium by the body D Vitamin A involves in the formation of retina in our eyes 15.Severely starved adults become very thin.It is because A they do not have enough energy for growth B they do not have enough carbon to build up body tissues C they break down body tissues to release energy D they do not have excess carbonhydrates to convert into fat <to be continued> +++++++++++++++++++++++++++++++++++++++++++++++++++++ [ Last edited by smallpotato226 on 2004-10-29 at 09:19 PM ] |