Question 1

True or false: Mimosa pudica is also called the 'touch-me-not' plant.

Accepted Answer

False. That common name usually refers to Impatiens. Mimosa pudica is called 'sensitive plant' or 'shameplant' due to its touch response.

Question 2

True or false: Mimosa pudica is native to the United States.

Accepted Answer

False. It is native to Central and South America, though it has become an invasive weed in many warm regions, including parts of the southern U.S.

Question 3

True or false: Mimosa pudica is carnivorous and eats small insects.

Accepted Answer

False. It is not carnivorous. The leaf movement is for defense against herbivores, not for trapping prey—unlike Venus flytraps.

Question 4

True or false: The folding response in Mimosa pudica is triggered by electrical signals.

Accepted Answer

True. Touch causes an electrical impulse (action potential) to travel through the plant, making cells lose water and collapse the leaflets.

Question 5

True or false: The leaves of Mimosa pudica fold up at night even when untouched.

Accepted Answer

True. This is a natural circadian rhythm called 'nyctinasty,' separate from its touch response—leaves close at night and reopen in daylight.

Question 6

True or false: Mimosa pudica is illegal to grow in most U.S. states.

Accepted Answer

False. It is not federally illegal, but it's classified as a noxious weed in a few states like Florida and Hawaii due to invasiveness.

Question 7

True or false: Mimosa pudica can learn and remember, even without a brain.

Accepted Answer

True. Studies show the plant habituates to repeated harmless stimuli, remembering not to curl up, a form of learning called 'habituation' without a central nervous system.

Question 8

True or false: The seeds of Mimosa pudica can remain viable for over 50 years.

Accepted Answer

True. Its hard seed coat allows dormancy for decades, with some seeds germinating after 50 years in soil seed banks.

Mimosa pudica Trivia Questions