curling of leaves of touch me not plant on touching find
stimuli and response
Answers
Answer:
The movement of curling if leaves in touch me not plant or mimosa pudica is due to stimulus of touch.
This type of stimulus is called as thigmonasty
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Answer:
Why Do Touch-Me-Not (Mimosa Pudica) Leaves Close When Touched?
Mimosa pudica is a perennial herb of the Fabaceae pea family and is native to Central and South America. Also known as the touch me not plant or the sensitive plant (also ‘tickleMe plant’), is well-known for closing its leaves (or folding its leaves inwards) when touched.
There are certain plant species that undergo structural changes in a very short span of time; this is known as ‘rapid plant movement‘. This happens when the receptors present in the plant’s body are activated by an alteration or modification of the plant’s shape. Mimosa pudica, better known as the ‘touch-me-not plant’, is one of the few plants that demonstrate this rapid plant movement. Although native to South and Central America, touch-me-nots are now found all over the world due to their amazing response to touch.
Why do mimosa pudica leaves close when touched?
The movement of plants caused by touch stimulus is known as Thigmonasty. In this mechanosensory response, water within the cells and other cell contents apply a certain amount of force against the cell walls of the plant; this is called turgor pressure.
It is due to turgor pressure that the leaves of this plant stay upright unless disturbed externally. Now, when you touch or shake the leaves (known as seismonastic movements), the swollen base of the leaf stalk (called the ‘pulvinus’), which contains certain contractile proteins, is activated.ound all over the world due to their amazing response to human touch.
When disturbed externally, certain regions of the plant trigger a release of various chemicals, including potassium ions, within the body of the plant. These chemicals make water and electrolytes flow/diffuse out of the cell, resulting in a loss of cell pressure. This causes the cell to collapse, which squeezes the leaves shut.
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