Title 15. PLANT GROWTH AND DEVELOPMENT.pdf ✅

PAPER 1 (1.) Given below are two statements : Statement I : Auxins are generally produced by growing apices of stem and roots. Statement-II : Auxin control Xylem differentiation and help in cell division. Choose the correct answer from the option given below: (1) Both Statement I and Statement II are incorrect (2) Statement I is correct but Statement II is incorrect (3) Statement I is incorrect but Statement II is correct (4) Both Statement I and Statement II are correct (2.) Given below are two statements : Statement I : Epthephon promotes female flower in cucumbers thereby increasing yield Statement-II : Ethephon hastens fruit ripening in tomato and apples and accelerates abscission in flowers and fruits. Choose the correct answer from the option given below: (1) Both Statement I and Statement II are incorrect (2) Statement I is correct but Statement II is incorrect (3) Statement I is incorrect but Statement II is correct (4) Both Statement I and Statement II are correct (3.) How many functions are associated with cytokinins (a) Formation of roots (b) Delay leaf senescence (c) Widely used to kill dicot weeds (d) Causes apical dominance (1) Two (2) Four (3) Three (4) One (4.) Identify the plant : (1) Juvenile and Adult of larkspur (2) Juvenile and Adult of Buttercup (3) Terrestrial and water habitats of buttercup (4) 1 and 2 Both (5.) Redifferentiated cells include
(1) Vascular cambium (2) Formation of secondary cortex (3) Phellogen (4) Intercalary meristem (6.) Which of the following hormones plays an important role in seed development, maturation and dormancy (1) ABA (2) GA3 (3) Auxins (4) Cytokinins (7.) The form of growth wherein new cells are always being added to the plant body by the activity of the meristem is called the (1) Closed form of growth. (2) Open form of growth. (3) Determinate form of growth. (4) Restricted form of growth. (8.) Growth is measured in terms of its length in case of (1) Apical shoot differentiation (2) Pollen tube formation (3) Division of cambium cells (4) Growth in grith (9.) Increased vacuolation, cell enlargement and new cell wall deposition are the characteristics of the cells in the phase (1) Cell division zone (2) Elongation zone (3) Maturation zone (4) Growth in thickness (10.) The simplest expression of arithmetic growth is exemplified by a root elongating at a constant rate, cuvre from this kind of growth is (1) Sigmoid curve (2) Linear curve (3) Parabolic curve (4) Parallel curve (11.) A meristematic cell after loosing the capacity of division, acquire again, the phenomenon is called (1) Differentiation (2) Dedifferentiation (3) Redifferentiation (4) None of these (12.) It takes very long time for pineapple plants to produce flower. Which combination of hormone can be applied to artificially induce flowering in pineapple plants throughout the year to increase: (1) Auxin and ethylene (2) Gibberellin and cytokinin (3) Gibberellin and abscisic acid (4) Auxin and abscisic acid (13.) Match the column I with column II : Column I Column II a) Extrinsic factors i. Temperature