"an apple tree" vs "a apple tree"

English Grammar Tests, Elementary Level

ESL/EFL Test #206 [color=blue]“Vocabulary Practice: Animal or Plant? (2)”, question 7

A tree is a plant. This is a fruit tree.

(a) apple
(b) ferret
© elk
(d) finch

English Grammar Tests, Elementary Level

ESL/EFL Test #206 [color=blue]“Vocabulary Practice: Animal or Plant? (2)”, answer 7

A apple tree is a plant. This is a fruit tree.

Correct answer: (a) apple

Your answer was: [color=red]incorrect
A finch tree is a plant. This is a fruit tree.
[size=200]_________________________[/size]

aN apple tree or a apple tree could any of you check this out please

It should be ‘an’ apple tree. Now you’ve spotted it I’m sure someone will change it shortly.

(By the way, a finch is a type of bird.)

ok thanks