THREE KINGDOM SYSTEM of classification

Question 1

Who proposed this system of classification ?

Answer 1

By Ernest Haeckel

Question 2

Which kingdom he added ? Which organisms were taken in this kingdom ?

Answer 2

3rd kingdom - PROTISTA

• It is the group of unicellular eukaryotes
• Organism - Chlamydomonas , protozoa , bacteria , algae , fungi , diatoms , euglena , slime moulds etc.

Question 3

What are the characters of the members of the kingdom Protista ?

Answer 3

1. Primarily aquatic
2. Boundary is not well defined
3. Show diverse lifestyles
4. Locomotion
   - Flagella - Euglena
   - Cilia - Paramecium
   - Pseudopodia - Amoeba
5. Nutrition - Autotrophic , heterotrophic and mixotrophic

Question 4

What is the mixotrophic mode of nutrition ?

Answer 4

By euglena

Both autotrophic and heterotrophic mode of nutrition

Question 5

What was the drawback of this system ?

Answer 5

Position of bacteria (Prokaryotes)