Explosive seed pods that release seeds at a very high velocity and send them off to large distances are observed in which of the following?

Correct answer: (c) Impatiens

Explanation

*Impatiens* (balsam, touch-me-not) disperses its seeds explosively. As the fruit ripens, tension builds up in its wall. A slight touch makes the pod burst open suddenly and curl back, throwing the seeds some distance from the parent plant. That is why it is called touch-me-not.

Other ways of dispersal:

• dandelion: by wind, with feathery hairs (pappus) acting as parachutes;
• coconut: by water, its fibrous husk letting it float;
• salvia: seeds mostly fall near the plant.

(*Impatiens* should not be confused with *Mimosa pudica*, whose leaves fold when touched.)