Which of the following does not have many segments ?

Options

A. Lobster
B. Grasshopper
C. Earthworm
D. Flatworm

Answer

To determine which of the following organisms does not have many segments, we will analyze each option provided:

1. **Lobster**:
- Lobsters are crustaceans that have a body divided into two main parts: the cephalothorax (which includes the head and the thorax) and the abdomen. While lobsters have a segmented body, it is not as distinctly segmented as that of an earthworm.

2. **Grasshopper**:
- Grasshoppers are insects with a body divided into three main parts: the head, thorax, and abdomen. The thorax and abdomen are further divided into segments, but again, the segmentation is not as pronounced as in some other organisms.

3. **Earthworm**:
- Earthworms are well-known for their segmented bodies. They typically have around 100 to 150 segments, which are clearly defined. Each segment has its own muscles and bristles (setae), contributing to their movement and structural function.

4. **Flatworm**:
- Flatworms belong to the phylum Platyhelminthes and are characterized by their flat, unsegmented bodies. They do not have the segmented structure that is seen in earthworms or other segmented organisms.

Based on this analysis, the organism that does not have many segments is the **flatworm**.

### Final Answer:
The organism that does not have many segments is the **flatworm**.