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Tuesday, 18 July 2017

Assignment 16 for class 10th

Assignment 16 for class 10th
Q1 Give the definition and example of the following
(a)Geotropism
(b)Phototropsm
(c)Thigmotropism
(d) Hydrotropism
(e) Chemotropism
Q2 Diffentiate between the following
(a) Tropic movement and nastic movement
(b) positive and negative phototropism
Q3 Explain the phenomenon of bending of stem towards light
Q4 Write two functions
(a) Auxin
(b) cytokinin
(c) Gibberellins
(d) Abscisic acid
HOTS
Q1 Why is abscisic acid called growth inhibitor?
Q2 Why do gardners are seen pruning the plants frequently?
Q3 Why should we cut the tip of stalk of fruit before eating the rest ?

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