A true fruit is a ripened ovary that usually starts ripening when it is
fertilized. And vegetable is any vegetative part of the plant which is
edible and contains stored food probably in the form of starch.
These
definitions are not exact as there are a lot of fruits which are fruits
but do not strictly follow the given definition. See Syconus, Composite
fruits, Sorosis.etc
Classification is based on several different
criteria, for example the mode of reproduction, arrangement and design
of flowering parts and flowers and also on the basis of habitat and
habit.
It is not easily recognizable
The weakest class is Q. Hope this helps
She would find oxygen (O2) in the test tube because plants give off oxygen
