Im doing this quiz too
Ive emailed the quiz setter and the number of letters for Bungle and Zippy clue is correct !!!
Is there such thing as a Geoffrey Tree?? Ive not been able to find one but ..........
"An Australian palm tree (Hedyscepe Canterburyana) cultivated as an ornamental for its feathery, drooping leaves with silvery-blue sheaths", and its also mentioned in Wikipedia.