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Sensitive Plant Trivia Questions

How much do you really know about Sensitive Plant? Below are 8 true or false statements. Click each one to reveal the answer and explanation.

1.

Touching a sensitive plant too often can cause it to die from exhaustion.

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Easy
✗ FALSE

While repeated stimulation may temporarily stress the plant, it does not die from exhaustion. It recovers energy after a few minutes.

2.

The sensitive plant is native to the United States, specifically the Southeast.

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Easy
✗ FALSE

Mimosa pudica is native to tropical Central and South America, not the US. It is considered an invasive weed in parts of the Southeast.

3.

The folding motion of the sensitive plant is powered by tiny muscles similar to those in animals.

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Medium
✗ FALSE

Plants have no muscles; the movement is caused by rapid water loss from specialized cells at the base of leaflets, called pulvini.

4.

The sensitive plant's leaves fold inward when touched to deter herbivores by exposing thorns.

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Medium
✓ TRUE

This is a commonly believed but actually false reason; the real purpose is to startle insects or reduce surface area to prevent water loss, not to expose thorns.

5.

Sensitive plants close their leaves at night as a form of sleep, called nyctinasty.

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Medium
✓ TRUE

This daily closing is a true circadian rhythm response, unrelated to touch, and reduces water loss and protects from nocturnal predators.

6.

The sensitive plant produces tiny pink puffball flowers that are pollinated by wind, not insects.

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Medium
✗ FALSE

The flowers are insect-pollinated, primarily by bees and butterflies. The fluffy pink blooms produce nectar to attract pollinators.

7.

A single touch can trigger a chain reaction, causing neighboring leaves to fold seconds later.

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Hard
✓ TRUE

An electrical signal similar to an action potential travels from the touched leaflet to adjacent leaves, causing a wave of folding.

8.

Mimosa pudica can learn and remember for weeks, even without a brain.

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Hard
✓ TRUE

Studies show the plant habituates to repeated touch, stopping its leaf-folding reflex, and can retain this memory for up to 28 days.

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