Question

mention any two drawbacks in classifying organisms under the old two kingdom classification

Answer 1

Carolus Linnaeus anciently divided all living organisms into two kingdoms : Plantae and Animalia.
The drawbacks of this classification are:
(a) First formed animals were neither plants nor animals.
(b) Fungi differ in structure, physiology and reproductive details from plants.
© At lower level of organisation there are several
instances where the distinction of plant and animal disappears.

Answer 2

Answer:

The drawbacks in classifying organisms under the old two kingdom classification are as follows: I)The animals were neither plants nor animals. II)Fungi differ from plants, in structure and reproductive details. III)The distinction of plants and animals disappeared in several instances at lower level of organisation.