Question

What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs?

a. Sensitive plant exhibits turgor movement, while legs show muscular contraction.
b. Sensitive plant undergoes chemotaxis, while legs move due to neural impulses.
c. Sensitive plant displays nastic movement, while legs move through skeletal muscle contraction.
d. Sensitive plant exhibits thigmotropism, while legs move due to gravitational pull.

Answer 1

A sensitive plant exhibits nastic movement due to changes in turgor pressure within cells, while leg movement in humans involves the contraction of skeletal muscles controlled by neural impulses.

Step-by-step explanation:

The difference between the movement in a sensitive plant and the movement in our legs is that a sensitive plant exhibits turgor movement whereas our legs show muscular contraction. Specifically, the sensitive plant, like the Mimosa pudica, displays a type of turgor movement known as nastic movement, which is a non-directional response to stimuli such as touch. In contrast, leg movement involves the contraction of skeletal muscles controlled by neural impulses which allow for directional movement.

During a nastic movement in plants, changes in turgor pressure within certain cells cause parts of the plant to move. This is an automatic response that does not depend on the direction of the stimulus. On the other hand, our skeletal muscles contract as a result of neural impulses sent from the brain, coordinated through the nervous system, enabling complex and directional movements.