The seeds of the poppy fruit are dry and dispersed by explosion when we touch them.
Explanation:
The poppy fruit is known for its unique method of seed dispersal. When the seeds are ripe, the fruit capsule dries up and becomes brittle. Upon contact or disturbance, the capsule explodes, releasing the seeds in a sudden burst. This explosive mechanism helps in dispersing the seeds over a wider area.
Why the other options are incorrect:
1. Drumstick: The seeds of the drumstick tree are not dispersed by explosion. They have a hard shell and are usually dispersed by birds or animals.
2. Sycamore: The seeds of the sycamore tree are dispersed by wind. They have a papery wing-like structure that allows them to be carried by air currents.
3. Cotton: Cotton seeds are not dispersed by explosion. They are usually dispersed by wind or human intervention.
Therefore, the correct answer is d. poppy.

The seeds of poppy fruit are dry and dispersed by explosion when we touch them.

The correct answer is option 'D' - poppy.

Explanation:
The dispersal of seeds is an important process in the reproductive cycle of plants. It ensures that the seeds are spread away from the parent plant, increasing their chances of finding suitable conditions for germination and growth. There are various mechanisms by which plants disperse their seeds, such as wind, water, animals, and explosion.

Seed Dispersal by Explosion:
Some plants have evolved a unique method of seed dispersal, known as explosion. In this method, the seeds are dispersed forcefully when they come into contact with an external force, such as touch or impact. The force causes the fruit or seed pod to burst open, propelling the seeds away from the parent plant.

In the case of the poppy fruit, its seeds are dry and dispersed by explosion. When the mature fruit is touched or disturbed, it undergoes a rapid dehiscence process. Dehiscence is the spontaneous opening of a fruit or seed pod to release its contents. In the poppy, the fruit capsule bursts open explosively, releasing the seeds into the surrounding environment.

Advantages of Seed Dispersal by Explosion:
Seed dispersal by explosion has several advantages for plants:
1. Increased dispersal range: The forceful ejection of seeds allows them to be dispersed over greater distances, increasing the chances of colonization in new areas.
2. Reduced competition: By spreading the seeds away from the parent plant, competition for resources such as light, water, and nutrients is reduced, allowing the offspring to have a better chance of survival and growth.
3. Avoidance of inbreeding: Dispersal helps to prevent inbreeding and promotes genetic diversity by ensuring that the seeds are not deposited in close proximity to the parent plant.

In conclusion, the seeds of poppy fruit are dry and dispersed by explosion when they come into contact with an external force. This mechanism of seed dispersal helps the poppy plant to effectively spread its seeds and ensure the survival and propagation of its species.