Which of these statements is correct about the five kingdom given by Whittaker ?

Options

A. Most of the kingdoms have organisms with a poorly defined nucleus .
B. Most of the kingdoms have organisms with a cell wall.
C. Most of the kingdoms have organisms with only one cell .
D. Most of the kingdoms have organisms with RNA as the genetic material

Answer

To solve the question about the five kingdom classification given by Whittaker, we will analyze each statement provided and determine which one is correct.

### Step-by-Step Solution:

1. **Understanding Whittaker's Five Kingdoms**:
- Whittaker proposed a five kingdom classification system which includes:
1. Monera (prokaryotic organisms)
2. Protista (unicellular eukaryotic organisms)
3. Fungi (multicellular eukaryotic organisms)
4. Plantae (multicellular eukaryotic organisms)
5. Animalia (multicellular eukaryotic organisms)

2. **Analyzing the Statements**:
- **Statement 1**: "Most of the kingdoms have organisms with poorly defined nucleus."
- This statement is incorrect because Monera (the only prokaryotic kingdom) has organisms with a poorly defined nucleus, while all other kingdoms (Protista, Fungi, Plantae, Animalia) have well-defined nuclei.

- **Statement 2**: "Most of the kingdoms have organisms with a cell wall."
- This statement is correct. Monera, Fungi, and Plantae have organisms that possess a cell wall. Protista may or may not have a cell wall, and Animalia does not have a cell wall.

- **Statement 3**: "Most of the kingdoms have organisms with only one set of chromosomes."
- This statement is incorrect. Most eukaryotic organisms (in Protista, Fungi, Plantae, and Animalia) have multiple sets of chromosomes (diploid or polyploid).

- **Statement 4**: "Most of the kingdoms have organisms with RNA as the genetic material."
- This statement is incorrect. The genetic material for the majority of organisms in these kingdoms is DNA, not RNA.

3. **Conclusion**:
- After analyzing all the statements, the only correct statement is that "most of the kingdoms have organisms with a cell wall." Hence, the correct answer is the second statement.

### Final Answer:
The correct statement about the five kingdoms given by Whittaker is: "Most of the kingdoms have organisms with a cell wall."

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