In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: All butterflies have _ pairs of legs.
[EX A]: three

[EX Q]: Some seeds can remain dormant for up to _ years.
[EX A]: two

[EX Q]: Mangroves have _ basic organs lika any other ordinary plant, the stem, the leaf and the root.
[EX A]:
three