Sentences of a paragraph are given below in jumbled order. Arrange the sentences is the right order to form a meaningful and coherent paragraph. A: For exotic beauty, few flowers rival the ghost orchid. B: It’s long been thought that only one insect, the giant sphinx moth, had a long enough proboscis to pollinate these orchids—but new images and research prove that wrong. C: As they feed, moths rub against a pollen source and pick up grains they’ll transfer to other orchids they visit. D: These rare orchids have long nectar tubes into which moths stick their tongue like proboscises to reach a sugary reward.

Sentences of a paragraph are given below in jumbled order. Arrange the sentences is the right order to form a meaningful and coherent paragraph. A: For exotic beauty, few flowers rival the ghost orchid. B: It’s long been thought that only one insect, the giant sphinx moth, had a long enough proboscis to pollinate these orchids—but new images and research prove that wrong. C: As they feed, moths rub against a pollen source and pick up grains they’ll transfer to other orchids they visit. D: These rare orchids have long nectar tubes into which moths stick their tongue like proboscises to reach a sugary reward. Correct Answer ADCB

The correct answer is option 4) i.e. ADCB

Key Points

• Sentence A is the introductory sentence. It will be put in the first place.
• Sentence A introduces ghost orchid. 
• Sentence D starts with orchid, maintaining the continuity of the sentence.
•  Sentence D expresses the process of feeding the moths with nectar.
• Sentence C starts with the continuity of their feeding. So it will be put at the third place.
• Sentence B gives the final statement about the moths. It is the concluding sentence. So it will be put at the fourth place.

Thus the correct order is: ADCB