Title 11. TRANSPORT IN PLANTS.pdf ✅

PAPER 1 (1.) The physical phenomenon of diffusion is responsible for which of the following function of the plant body.[Page: 176] (I) Exchange of gases during photosynthesis (II) Stomatal transpiration (III) Spread of aroma of flower (IV) Turgidity to plant cells (1) I, II and III (2) I and II (3) III and IV (4) Only II (2.) A special type of diffusion in which water is absorbed by solids is called [Page: 182] (1) osmosis (2) plasmolysis (3) both(a) and (b) (4) imbibition (3.) The water potential of pure water is[NEET–2017, Page: 179] (1) zero (2) less than zero (3) more than zero, but less than one (4) more than one (4.) The modified equation for water potential is[Page: 180] (1) w s p    = + (2) w s p    = − (3) w s   = (4) w p s    = − (5.) If turgidity of a cell surrounded by water increases, the wall pressure will[PAges: 179–180] (1) increase (2) decrease (3) fluctuate (4) remain unchanged (6.) Suction pressure is also known as[PAges: 179–180] (1) diffusion pressure deficit (2) osmotic pressure (3) wall pressure (4) turgor pressure (7.) Choose the right option exhibiting correct relationship between diffusion pressure deficit, osmotic pressure and turgor pressure?[Page: 179] (1) DPD = OP + TP (2) DPD = OP − TP (3) DPD = OP (4) DPD = OP = TP (8.) Which of the following cells in the given figure show wall pressure equivalent to zero?[Page: 179]
(1) P and Q (2) Q and S (3) P and R (4) R and S (9.) Water enters a cell due to [Page: 179] (1) OP (2) SP (3) TP (4) WP (10.) Which of the following statements does not apply to reverse osmosis?[ExemplAr, Page: 179] (1) It is used for water purification. (2) In this technique, pressure greater than osmotic pressure is applied to the system. (3) It is a passive process. (4) It is an active process. (11.) Identify the direction and rate of osmosis which depend on two forces.[PAges: 179– 180] (1) Diffusion pressure and pressure gradient. (2) Pressure gradient and concentration gradient. (3) Concentration gradient and diffusion pressure gradient. (4) None of these (12.) Two living cells viz., RBC and a plant cell are kept in distilled water. The solute concentration is same in both the cells. What kind of changes can be observed in both the cells?[Page: 180] (1) Both plant cell and RBC would not undergo any changes. (2) The RBC would increase in size and burst, while the plant cell would remain about the same size. (3) The plant cell would increase in size and burst, while the RBC would remain about the same size. (4) Both plant cell and RBC would decrease in size and collapse. (13.) A cell dipped in 0.5 M sucrose solution has no effect, but when the same cell is dipped in 0.5 M NaCl solution, the cell will [Page: 179] (1) increase in size (2) decrease in size (3) will be turgid (4) will get deplasmolysed
(14.) Which one of the following elements is responsible for maintaining turgor in cells?[NEET-2018, Page: 180] (1) Potassium (2) Sodium (3) Magnesium (4) Calcium (15.) Which of the following is responsible for movement in sensitive plants like Mimosa pudica?[Page: 179] (1) Turgor pressure (2) Imbibition (3) Plasmolysis (4) Osmosis (16.) Which of the following pressure brings about stretching of cell wall in plant cell?[Page: 179] (1) Osmotic pressure (2) Turgor pressure (3) Diffusion pressure (4) Water potential (17.) Study the following statements and find the one which is incorrect regarding imbibition?[HOTS, Page: 180] (A) Imbibition is the phenomenon of adsorption of water or any other liquid without forming solution. (B) The liquid which is imbibed is called imbibant. (C) There is a decrease in volume during imbibition. (D) Water is absorbed by germinating seed through imbibition. (1) A and B (2) B and C (3) A and C (4) A, C and D (18.) The main difference between active and passive transport across cell membrane is[NEET OdishA–2019, PAges: 179–183] (1) passive transport is non-selective whereas active transport is selective (2) passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes (3) passive transport is confined to anionic carrier proteins whereas active transport is confined to cationic channel proteins (4) active transport occurs more rapidly than passive transport (19.) Which of the following is not a feature of active transport of solutes in plants? [NEET OdishA–2019, Page: 178] (1) Occurs against concentration gradient (2) Non-selective (3) Occurs through memberanes (4) RequiresATP (20.) What will be the direction of flow of water when a plant cell is placed in a hypotonic solution?[NEET OdishA–2019, Page: 178] (1) Water will flow in both directions (2) Water will flow out of the cell (3) Water will flow into the cell (4) No flow of water in any direction (21.) Xylem translocates[NEET–2019, PAges: 179–180] (1) water and mineral salts only
(2) water, mineral salts and some organic nitrogen only (3) water, mineral salts, some organic nitrogen and hormones (4) water only (22.) MatchColumn-I with Column-II and choose the correct option from the codes given below. [Page: 175] Column-I Column-II (A) Isotonic (1) Cells flaccid (B) Hypotonic (2) No net flow of water (C) Hypertonic (3) Cells turgid (D) Plasmolysis (4) Water moves into the cell (E) Deplasmolysis (5) Water moves out of the cell Codes A B C D E (1) 1 3 4 2 5 (2) 2 4 5 1 3 (3) 2 4 1 3 5 (4) 3 2 5 1 4 (23.) MatchColumn-I with Column-II and choose the correct option from the codes given below. [HOTS, PAges: 180–181] Column-I Column-II (a.) Water potential of 10% salt solution (1) Positive (b.) Pressure potential in a normal cell (2) Negative (c.) Pressure potential in a plasmolysed cell (3) Positive (d.) Metric potential on the surface of the wood (4) Negative (5) Zero Codes A B C D (1) 2 3 5 4 (2) 3 4 2 1 (3) 1 2 4 3 (4) 4 3 2 1 (24.) Which of the following statements are true/false?[HOTS, Page: 180] (A) The positive hydrostatic pressure is called turgor pressure. (B) Wall pressure exerts to prevent the increase of protoplasm size. (C) Diffusion is more rapid in liquids than in gases. (D) Diffusion of water through a semi-permeable membrane is called imbibition. (E) Osmosis is the movement of substance, which takes place along a diffusion gradient. (1) A and B are true, while C, D and E are false. (2) A and C are true, while B, D and E are false. (3) A and D are true, while B, C and E are false. (4) A and D are true, while B, C and D are false.