In Whittaker system of classification, all prokaryotes were included in the kingdom :
(a) Monera
(b) Protista
(c) Fungi
(d) Mychota

Options

A. Monera
B. Protista
C. Fungi
D. Mychota

Explanation

To solve the question regarding the Whittaker system of classification and the kingdom that includes all prokaryotes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Whittaker Classification System**:
- R.H. Whittaker proposed a five-kingdom classification system in 1969. The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia.

2. **Identify the Characteristics of Prokaryotes**:
- Prokaryotes are unicellular organisms that lack a true nucleus and membrane-bound organelles. They include bacteria and cyanobacteria.

3. **Analyze the Options Given**:
- (a) Monera: This kingdom includes all prokaryotic organisms.
- (b) Protista: This kingdom primarily consists of eukaryotic organisms, not prokaryotes.
- (c) Fungi: This kingdom is also composed of eukaryotic organisms.
- (d) Mycota: This term is often used interchangeably with Fungi, which also consists of eukaryotes.

4. **Determine the Correct Answer**:
- Since Monera is the only kingdom that includes all prokaryotic organisms, the correct answer is (a) Monera.

### Final Answer:
The correct option is **(a) Monera**.

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