Fill in the blanks :
(A) ....is a simple gaseous hormone.
(B) ....is shedding of leaves, fruits or flowers by a plant
(C) Plant growth is generally confined to ....regions and in.......tissues.
(D) Cytokinins are synthesized in areas where .... is occurings.
(E) Auxins are generally produced by the growing apices of ....and ......

Fill in the following blanks: (a) A plant's response to light is called........ (b) A plant's response to gravity is called..... . (c) Plant shoot grows upward in response to....... (d) Plant roots grow downward in response to ....... (e) Tendrils wind around a support in response to ........ (f) Plant roots grow towards.... and in the direction of force of ........ (g) A root of a plant grows downward. This is knows as......... (h) ......is the hormone that causes phototropism in plants (i) The response of leaves to the sunlight is called ...............

Fill in the blanks : (A) Each annual ring corresponds to the growth of ………. of…………. year (B) Secondary growth helps in increasing the ............... of the roots and stems. (C) A meristem is a localised region in which actual cell .............. occurs. (D) The permanent tissues comprise cells which have ........... their capacity of division. (E) Companion cells are specialised parenchyma cells which are closely associated with the ......... elements (F) The vascular tissue system is formed by the .............. and ..............

Fill in the blanks: (A) Ethylene is synthesized in tissue undergoing ....and..... fruits. (B) Abscisic acid acts as a general....of growth and metabolism. (C) ......is a period between complete materity and final death of an organ or organism. (D) ....were first plant hormones to be discovered. (E) ....means the testing of chemical substance for its activity in causing a growth response in a living plant or its part.

Fill in the blanks A. Maximum growth is observed in ………..phase. B. Apical dominace is due to ……………… C. ……………..inititate rooting D. Pigment involved in photoperception in lfowering plants in ……………

Fill in the blanks A. Maximum growth is observed in ………..phase. B. Apical dominace is due to ……………… C. ……………..inititate rooting D. Pigment involved in photoperception in lfowering plants in ……………

Fill in the blanks: (1) Wheat, barley end rye have two kinds of varieties: winter and spring varieties. The ‘spring’ variety are normally planted in ....a.... and come to flower and produce grain before the end of growing season. (2) 'Winter varieties, however if planned in ..b... would normally fail to flower or produce mature grain within a span of flowering season. (3) hence ‘winter’ varieties are planted in ..c.... . They germinate, and over ........d come out as harvested usually around mid-summer.

Fill in the blanks: (1) Wheat, barley end rye have two kinds of varieties: wmter and spring varieties. The ‘spring’ variety are normally plented in ....a.... and come to flower and produce gram before the end of growing season. (2) 'Winter varieties, however if planned in ..b... would normally fail to flower or produce mature grain within a span of flowering season. (3) hence ‘winter’ varieties are planted in ..c.... . They germinate, and over ........d come out as harvested usually around mid-summer.

48 Fill in the blanks (a)........are forms of complex tissue. (b)....have guard cells (c) Cells of cork contain a chemical called...... (d) Husk of coconut is made of.......tissue. (e)......gives flexibility in plants. (f) .....and.....are both conducting tissues. (g) Xylem transports.......and ........ from soil. (h) Phloem transport.......from.......to other parts of the plant.

Which of the following plant hormone helps in the growth of the stem ? a. Auxin b. Gibberellin c. Cytokinin d. Abscisic acid