Page 1 - 2.4-Home Assignment-(Obj & Subj) Coordination in Plants-(i)

SAI International School

Std -X, Subject- BIOLOGY
Chapter- Control and Coordination
Sub Topic- Coordination in Plants- Immediate response to
stimulus, Movement due to Growth (tendrils)
Module- 16
Home Assignment

Objective- MCQ

Sl.no Questions

1 Any change in an organism’s environment that causes a response is .................
a. Photosynthesis
b. cellular respiration
c. Stimuli
d. Tropism

2 The leaves of a sensitive plant possess a soft cushion-like structure called...........
a. pulmonus
b. pulvinus
c. pollenus
d. polynus

3 The growth of plant in the direction of stimulus is called...
a. tropism
b. nastic
c. positive tropism
d. negative tropism

4 Which of the following term denotes the movement of the root of a plant towards
moisture in the soil
a. thigmotropism
b. chemotropism
c. hydrotropism
d. geotropism

5

This shows an example for
a. internal stimuli
b. external stimuli
c. Phototropism
d. no answer is correct

6 Plant hormones are called...
a. phytohormones
b. cytohormones
c. mesohormones
d. mitohormones