In male grass hopper and moths there are two pairs of autosomes and :-

Options

A. X only
B. X and Y
C. Y only
D. none of these

Answer

To solve the question regarding the chromosome composition in male grasshoppers and moths, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Chromosome Composition**:
- Male grasshoppers and moths have two pairs of autosomes. Autosomes are chromosomes that are not involved in determining the sex of an organism.

2. **Identify the Sex Chromosomes**:
- In male grasshoppers, the sex chromosomes are represented as X0, which indicates that there is one X chromosome and no Y chromosome. The "0" signifies the absence of a second sex chromosome.

3. **Analyze the Options**:
- The options given are:
- X only
- X and Y
- Y only
- None of these
- Since male grasshoppers have one X chromosome and no Y chromosome, the correct representation of their sex chromosomes is X0.

4. **Determine the Correct Answer**:
- Since the question specifically asks about the sex chromosomes in male grasshoppers and moths, and we have established that male grasshoppers have only one X chromosome (X0), the correct answer is "X only".

### Final Answer:
- The correct option is **X only**.

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