Year: 2022

(a)  Vessels                               (b)  Tracheids (c)   Fibres                                 (d)  Wood parenchyma Ans. d (13)

(a)  Volume of liquid in the bladder will increase (b)  Volume of liquid will decrease (c)   Volume of liquid in the bladder remain constant (d)          Plasmolysis will occur Ans. (a)      Urinary bladder of goat is like plasma membrane, so in …

(a)  Lower concentration to higher concentration of solvent (b)  Higher concentration of solvent to lower concentration of solvent (c)   One cell to another (d)  None of the above Ans.   (a)  It is the migration of solvent from a hypotonic solution …

(a)  Water from soil entering a root hair (b)  Water passing from root hair to adjacent cells (c)   Water passing up a xylem vessel element to xylem vessel element above it (d)          Water entering a mesophyll cell from xylem vessel …

(a)  Hypertonic                        (b)  Hypotonic (c)   Isotonic                              (d)  Saturated Ans. (a)      A solution whose osmotic concentration is more than that of another solution or cell sap is called hypertonic solution. (17)

(a)  Flaccid                                (b)  Turgid (c)   Longer                               (d)  More full of starch Ans.  (a)           If potato tuber is placed in to strong solution of sugar, it would become shrink due to loss of water from its cell. (12)

(a)  Soil into root hair (b)  Root hair into cortical cell (c)   Pericycle cells into tracheal elements (d)  Cortical cells in the pericycle Ans. b (9)

(a)  Plasmalemma                   (b)  Cell wall (c)   Mitochondrial membrane       (d) Chloroplast membrane Ans.  (a)      Plasmalemma allows selective passage of solutes along with solvent, through them. (15)

(a)  Passage of water (b)  Passage of water and some solutes in and out of the cell (c)   Passage of water and solutes into the cell (d)  Movements of the cell contents out of the cell Ans.        (b)  …

(a)  Isotonic solution               (b)  Hypertonic solution (c)   Air                                      (d)  Hypotonic solution Ans.  (b)          During plasmolysis, plasma membrane shrink along with cytoplasm, so by open pores of cell wall hypertonic solution will be filled between cell wall and plasma membrane (16)

  (a)  Imbibition                         (b)  Endosmosis (c)   Active diffusion                (d)  All the above Ans.    (a)  Dry gum or pieces of agar-agar are placed in water, they swell and their volume increases. (17)

(a)  Plant absorb excess quantity of water (b)  Plants take in small quantity of mineral salts through soil water (c)   Water and inorganic salt are taken in simultaneously by root hairs (d)  Plant absorb only one thing at a time …

(a)  Lenticels (b)  Stomata (c)   Hydathodes (d)  General surface of the cells by diffusion Ans.  d (9)

(a)  Cellulose                            (b)  Hemicellulose (c)   Fat                                      (d)  Protein Ans.     (d)  Proteins are the strongest imbibants of water, starch less strong, cellulose being the weakest. That is why proteinaceous pea seeds swell more than the starchy wheat seeds. (16)

(a)  Movement of solute through semipermeable membrane (b)  Movement of solvent through a semipermeable membrane (c)   Movement of solution through a semipermeable membrane (d)  None of the above Ans. (b)      Osmosis is a special type of diffusion of a liquid, …

(a)  Diffusion                            (b)  Osmosis (c)   Plasmolysis                        (d)  Imbibition Ans. (b)      Osmosis is a special type of diffusion or diffusion through semipermeable membrane (7)

(a)  It gains turgidity               (b)  It looses turgidity (c)   It becomes plasmolysed   (d)  Nothing happens Ans. (d)      In formalin preserved Spirogyra filament, osmosis does not take place. (28)

(a)  More elasticity                  (b)  More softness (c)   More turgidity                  (d)  None of these Ans. a (24)

(a)  The entry of water from root hair (b)  The entry of mineral salts from the root hair (c)   Both together (d)  The rise of sap in plants Ans.  (c)           This type of membranes allow selective passage of solutes along …

(a)  Permeable and differentially permeable respectively (b)  Both semipermeable (c)   Semipermeable and differentially permeable (d)  Both differentially permeable Ans.  a (13)

(a)  Soil into periplasmic space of root hairs (b)  Root hairs to cortical cells (c)   Cortical cells to pericycle (d)  Pericycle to trachea Ans.  a (4)

(a)  It provides energy for chemical reaction (b)  It acts as a solvent (c)   It provides a medium for chemical reaction (d)  It releases hydrogen ions on ionisation Ans. (a)      ATP releases small amount of energy required for building new …

(a)  Red                           (b)  Yellow (c)  Blue–green             (d)  Yellow–red Ans. C (21)

(a)  Due to more absorption (b)  Due to more evaporation (c)   Due to more transpiration (d)  Root die due to absence of air Ans. (d)      In absence of O2 respiration does not take place in root cells, thus they are unable …

(a)  Available to the plant (b)  Whole of the soil water (c)   Amount of water not available to the plant (d)  None of these Ans.  (c)      Echards is the quantity of water present in soil which is not available for …

(a)  Dumb-bell shaped guard cells (b)  Pentamerous flowers (c)   Reticulate venation (d)  Capsular fruits Ans.(a)      The guard cells of monocots (family – Gramineae) are dumbel shaped or elliptical, e.g., Sugarcane. (6)

(a)  In translocation of solutes (b)  In the mobility of gametes (c)   Provides support to the aquatic plants (d)          All the above Ans.  (d)  Water is the most important constituent of plants and is essential for the maintenance of life, …

(a)  Associated with vessels (b)  Associated with tracheids (c)   Associated with particles of hydrophilic solutes (d)  None of these Ans.  c (18)

(a)  Sandy soil                          (b)  Loam (c)   Clay                                    (d)  None of these Ans. (b)      Loam are sufficiently aerated and have good water holding capacity. Therefore, they are very good for water absorption and growth (23)

(a) Alluvial (b) Podosol (c) Laterite (d) None of these Ans. c (7)