What is special about pollination is Yucca ?

Explanation

(i) The relationship between Yucca and moth is an example for obligate mutualism.
(ii) The moth use the flower layering eggs and also helps in pollination by pushing the pollen into the stigma.
(iii) The Larvae of the moth feed on some of developing seeds.
(iv) The moth cannot survive without Yucca and the latter fails to reproduce if the moth is not available.