Question

Censer mechanism of seed dispersal is found in
A. Papaveraceae
B. Liliaceae
C. Poaceae
D. Rosaceae

Answer 1

Many plants' capsules open in such a way that the seeds escape only when the capsules are violently agitated, as by a strong wind (e.g Aristolochia. for example, Poppy.) This includes a proclivity to disperse the seeds. The seeds can also have a flat shape or winged outgrowths (as in Aristolochia), and since they're likely to escape when there's a strong wind, they'll be blown for long distances. This is what happens in the censer mechanism.

Complete explanation:
Option A: The seeds fall out in small aggregates when the fruit is shaken violently with the aid of the wind, and this mechanism is known as the censer mechanism. They wait for a strong wind to allow the fruit to move back and forth. It can be found, for example, in papaver. They wait for a strong wind to allow the fruit to move back and forth.
Hence, option A is correct.
Option B: Within the order Liliales, the lily family, Liliaceae, contains about $15$ genera and $610$ species of flowering plants. In the seed dispersal of the lily family, zoochory involving beetles and ants is observed (Liliaceae).
Hence, option B is incorrect.
Option C: The Poaceae or Gramineae family of monocotyledonous flowering plants known as grasses is a large and nearly ubiquitous family of monocotyledonous flowering plants known as grasses. Cereal grasses, bamboos, native grassland grasses, and grasses grown in lawns and pastures are all included. The grass is a term used to describe all of these plants. Poaceae seeds are dispersed by the wind.
Hence, option C is incorrect.
Option D: Endozoochory is used to disperse Rosaceae seeds. Endozoochory is a seed dispersal process that involves vertebrate animals, primarily birds and mammals, ingesting seeds.
Hence, option D is incorrect.

Hence, Option A is the correct answer.

Note:
The Papaveraceae family is also known as the Poppy family. There are $28$ genera and $700$ species in total (Rendle), with $45$ species occurring in Asian countries. Members of this family can be found in the northern extratropical and temperate regions of the world. Some of them grow like weeds all over the world.