Banana means (a)   in arabic.

The tree that can store thousand to one lakh twenty thousand litres of water in its trunk is (a)  

Potatoes were first cultivated 7000 years ago in (a)  

The largest flower is (a)   -

Cricket bats are made from the bark of (a)   trees

(a)   is the only fruit that has seeds on the outside.

Aspirin is obtained from the bark of (a)  

Drug quinine is obtained from (a)  

The science of calculating the age of a tree by its rings is called (a)  

Apple is (a)   -- percentage of water. So it floats

Tears during cutting of onion is caused by (a)   acid

The tallest tree is (a)   -

(a)   is the oldest living species of trees.

(a)   is the shortest tree