Two kingdom system did not distinguish between the eukaryotes and prokaryotes, unicellular and multicelllular organisms and photosynthetic (Autotrophs) and non-photosynthetic (Heterotrophs) Organisms. These are demerits of two kingdom system. (True/False)

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Two Kingdom System**: The two kingdom system of classification was proposed by Carolus Linnaeus in 1735. It divides all living organisms into two kingdoms: Kingdom Plantae and Kingdom Animalia.

2. **Basis of Classification**: The classification was primarily based on the mode of nutrition (how organisms obtain their food) and locomotion (movement). In this system, organisms were categorized without considering other important characteristics.

3. **Eukaryotes vs. Prokaryotes**: The statement mentions that the two kingdom system did not distinguish between eukaryotes (organisms with complex cells containing a nucleus) and prokaryotes (simple cells without a nucleus). This is true, as both blue-green algae (which are prokaryotic) and fungi, algae, and plants (which are eukaryotic) were placed in the same kingdom (Plantae).

4. **Unicellular vs. Multicellular Organisms**: The two kingdom system also failed to distinguish between unicellular (single-celled) and multicellular (many-celled) organisms. For example, protists (unicellular) and higher multicellular organisms were all categorized under Kingdom Animalia, which indicates a lack of distinction.

5. **Photosynthetic vs. Non-Photosynthetic Organisms**: The distinction between autotrophs (organisms that produce their own food, such as plants) and heterotrophs (organisms that consume other organisms for food, such as fungi) was also not made. In the Plantae kingdom, both autotrophic plants and heterotrophic fungi were included, showing that this classification system did not differentiate between these two types of organisms.

6. **Conclusion**: Therefore, the statement that the two kingdom system did not distinguish between eukaryotes and prokaryotes, unicellular and multicellular organisms, and photosynthetic and non-photosynthetic organisms is **True**.

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