MOVEMENT IN PLANTS

1-       How a paramecium reacts to salt

a) Phototropism         b) Geotropism         c) Thigmotropism        d) Hydrotropism           e) Chemotaxis

2-       How a plant grows on a window sill

a) Phototropism          b) Geotropism         c) Thigmotropism        d) Hydrotropism         e) Chemotaxis

3-       How a euglena moves in a partly shaded pool

a) Phototropism       b) Geotropism         c) Thigmotropism          d) Hydrotropism           e) Chemotaxis

4-Which of the following growth movements is responsible for deepening of the plant roots?

(a) geotropism   (b) chemotropism   (c) thigmotropism    (d) phototropism         (e) all of the above.

5-Which statement is incorrect concerning the physiological basis of phototropism?

(a) phototropism takes place as a result of unequal rates of growth

(b) phototropism results from a difference in cell division and cell elongation

(c) auxins are known to hinder cell growth in actively growing regions

(d) all of the above

(e) none of the above

6- is related to control of photoperiodism    

A-Auxin             B-Cytokinin      C-Gibberellin      D. Ethylene        E.Phytochrome