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1) The oxygen in water is absorbed by the roots through a. stomata b. lenticels c. root hairs d. cuticles
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2) A membrane that lets some particles to pass through is known as a. total permeable membrane b. semi permeable membrane c. cell wall d. tonoplast
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3) For transportation of food and minerals, plants have a. one transport systems b. two transport system c. three transport systems d. four transport systems
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4) Xylem' and 'phloem' vessels are found in a. leaves only b. stem only c. roots only d. whole plant
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5) The transportation of food and mineral salts from leaves to all other parts of the plant by phloem is known as a. translocation b. transpiration c. respiration d. photosynthesis
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6) Dissolved minerals and water is taken from roots to leaves by the vascular bundle named a. xylem b. phloem c. vein d. stem
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7) 'Phloem' vessels contain a. living cells b. dead cells c. arranged but dead cells d. disorganized but living cells
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8) Xylem' vessels contain a. living cells b. dead cells c. arranged cells but dead d. disorganized cells but living
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9) The main force that pulls water and dissolved mineral salts from the roots to the leaves is due to the process of a. translocation b. transpiration c. respiration d. photosynthesis
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10) The stem is strong due to a. dead cells in the xylem b. living cells in the phloem c. fibers in the vessels d. hardness of the vascular bundles
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11) During respiration, oxygen is a. given out b. taken in c. exchanged d. transferred to roots
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12) Stem is kept on the ground due to the a. strength of roots b. strength of leaves c. strength of soil d. strength of flowers
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13) The phenomenon of movement of particles from higher concentration to lower concentration without the use of energy is known as a. diffusion b. osmosis c. active transport d. respiration
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14) Several layers of cells at the tip of the root form a. small roots b. root caps c. root hairs d. all of them
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15) During respiration, carbon dioxide is a. exchanged b. taken in c. given out d. transferred to roots
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16) The small openings in the pits of the bark is known as a. cuticles b. lenticels c. hard stomata d. hard pores
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17) The tremendous force which pulls the water and mineral salts up to the leaves can pull these contents to the height of a. 20 meters b. 30 meters c. 40 meters d. 50 meters
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