BIOLOGY

(a)  They do not rot due to their own growth (b)  They do not rot due to fungal or bacterial...

(a)  Imbibition                         (b)  Diffusion (c)   Gummosis                          (d)  None of these Ans. (b)      Meaning of diffusion is to flow out or...

(a)  Osmosis                             (b)  Diffusion (c)   Permeability of cell wall  (d)  None of the above Ans. b (42)

(a)  Plasmolysis                        (b)  Deplasmolysis (c)   Phagocytosis                     (d)  Reverse phagocytosis Ans. (d)      Removal of large molecule from cell is also known as...

(a)  Endosmosis                       (b)  Exosmosis (c)   Imbibition                         (d)  None of these Ans. (b)      Sugar solution is hypertonic hence shrinkage of grapes...

(a)  Exosmosis                          (b)  Endosmosis (c)   Imbibition                         (d)  Plasmolysis Ans.  (b)      Because the concentration of cytoplasm of pollen grains is high...

(a)  Jamun                                (b)  Orchid (c)   Melia                                  (d)  Moringa Ans.  (b)          In orchids, aerial roots are found which have velamen tissue,...

(a)  Hypotonic                          (b)  Hypertonic (c)   Isotonic                              (d)  None of these Ans. (a)      If the plasmolysed cell (flaccid cell) is placed in...

(a)  Cytoplasm will decompose (b)  Mineral salt will break the cell wall (c)   Salt water enter the cell (d)  Water...

(a)  Osmotic concentration (b)  Associate tissue structures (c)   Transpiration (d)  Sucking capacity of root hair Ans.  (a)      Active absorption takes...

  (a)  Universal solvancy (b)  Conductivity (c)   Specific heat (d)  Ability to maintain body temperature Ans.       (a)  When...

(a)  Vessels                               (b)  Tracheids (c)   Fibres                                 (d)  Wood parenchyma Ans. d (14)

(a)  Volume of liquid in the bladder will increase (b)  Volume of liquid will decrease (c)   Volume of liquid in...

(a)  Lower concentration to higher concentration of solvent (b)  Higher concentration of solvent to lower concentration of solvent (c)   One...

(a)  Water from soil entering a root hair (b)  Water passing from root hair to adjacent cells (c)   Water passing...

(a)  Hypertonic                        (b)  Hypotonic (c)   Isotonic                              (d)  Saturated Ans. (a)      A solution whose osmotic concentration is more than...

(a)  Flaccid                                (b)  Turgid (c)   Longer                               (d)  More full of starch Ans.  (a)           If potato tuber is placed in to...

(a)  Soil into root hair (b)  Root hair into cortical cell (c)   Pericycle cells into tracheal elements (d)  Cortical cells...

(a)  Plasmalemma                   (b)  Cell wall (c)   Mitochondrial membrane       (d) Chloroplast membrane Ans.  (a)      Plasmalemma allows selective passage of solutes along...

(a)  Passage of water (b)  Passage of water and some solutes in and out of the cell (c)   Passage of...

(a)  Isotonic solution               (b)  Hypertonic solution (c)   Air                                      (d)  Hypotonic solution Ans.  (b)          During plasmolysis, plasma membrane shrink along with...

  (a)  Imbibition                         (b)  Endosmosis (c)   Active diffusion                (d)  All the above Ans.    (a)  Dry gum or pieces of...

(a)  Plant absorb excess quantity of water (b)  Plants take in small quantity of mineral salts through soil water (c)  ...

(a)  Lenticels (b)  Stomata (c)   Hydathodes (d)  General surface of the cells by diffusion Ans.  d (11)

(a)  Cellulose                            (b)  Hemicellulose (c)   Fat                                      (d)  Protein Ans.     (d)  Proteins are the strongest imbibants of water, starch less...

(a)  Movement of solute through semipermeable membrane (b)  Movement of solvent through a semipermeable membrane (c)   Movement of solution through...

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

(a)  It gains turgidity               (b)  It looses turgidity (c)   It becomes plasmolysed   (d)  Nothing happens Ans. (d)      In formalin preserved...

(a)  The entry of water from root hair (b)  The entry of mineral salts from the root hair (c)   Both...

(a)  More elasticity                  (b)  More softness (c)   More turgidity                  (d)  None of these Ans. a (26)

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

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

(a)  It provides energy for chemical reaction (b)  It acts as a solvent (c)   It provides a medium for chemical...

(a)  Red                           (b)  Yellow (c)  Blue–green             (d) ...

(a)  Due to more absorption (b)  Due to more evaporation (c)   Due to more transpiration (d)  Root die due to...

(a)  Available to the plant (b)  Whole of the soil water (c)   Amount of water not available to the plant...

(a)  Dumb-bell shaped guard cells (b)  Pentamerous flowers (c)   Reticulate venation (d)  Capsular fruits Ans.(a)      The guard cells of monocots...

(a)  In translocation of solutes (b)  In the mobility of gametes (c)   Provides support to the aquatic plants (d)          All...

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

(a)  Sandy soil                          (b)  Loam (c)   Clay                                    (d)  None of these Ans. (b)      Loam are sufficiently aerated and have good...