According to two kingdom classification system, differentiate kingdom Plantae and Animalia
Solution:
|
Characteristics |
Kingdom Plantae |
Kingdom Animalia |
|
1. Cell Wall |
Present (cellulose-based) |
Absent |
|
2. Locomotion |
Absent (sessile organisms) |
Present (motile organisms) |
|
3. Nutrition |
Autotrophic (photosynthesis) |
Heterotrophic (holozoic) |
|
4. Response to External Stimuli |
Slow (tropisms, nastic movements) |
Quick (nervous and muscular systems) |
|
5. Contractile Vacuole |
Absent |
Present (in unicellular forms) |
|
6. Reserve Food |
Starch |
Glycogen |
|
7. Growth Pattern |
Unlimited/indeterminate |
Limited/determinate |
|
8. Plastids |
Present (chloroplasts) |
Absent |
Historical Context: This two-kingdom system was proposed by Carolus Linnaeus (1758) and dominated biological classification for nearly 200 years.
Limitations Addressed Below: This system failed to accommodate organisms like bacteria, fungi, and protists that didn't fit clearly into either kingdom.
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