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Solution


Q.

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other    [2018]
1 Hydrilla  
2 Yucca  
3 Banana  
4 Viola  

Ans.

(2)

Yucca has an obligate mutualism with a species of moth, i.e., Pronuba. The only pollinator of this plant is the Yucca moth. The Yucca moth is likewise dependent upon the Yucca plant as Yucca moth caterpillars need to eat Yucca seed only or starve.