Which
of the following is/are induced movement/s of curvature shown by the plants
organs which are capable of turning in any direction?
a) kinesis
b) tropic movements
c) taxis
d) all of these
Explanation: Tropic movement is the movement of a plant in response to environmental stimuli.
In tropism, the direction of movements is determined by the………stimulus.
a) direction
b) intensity
c) timing
d) all of these
Tropism or tropic movements are classified into ……..classes.
a) three
b) two
c) four
d) seven
Explanation: 1. Geotropism and
2. Phototropism
In which of the following organ/s of plants, geotropism occurs?
a) root
b) stem
c) flowers
d) both a and b
The
orientation of stem and roots in response to the force of gravity is called
a) positive taxis
b) klinokinesis
c) geotropism
d) phototropism
Explanation: geo means earth tropism movement of organism
Which of the following organ/s of the plant show/s positive geotropism?
a) root
b) stem
c) flowers
d) both a and b
Explanation: it is towards the force of gravity
