Collecters secreting sticky exudations are characteristic of

In Botany, the term exudate refers to the fluid emitted through pores in the plants and the process is called as exuding. Examples of plant exudates are saps, gums, resins, latex and nectar. Sticky exudates are released from the glandular trichomes of the leaves or branches when damaged or even flowers. These sticky exudations are tactile signals of the plants which either work as alarm signals to the aphids, traps insects or are signals for pollinators.
Therefore, the correct answer is option D.