Caudal automy is exhibited by

Options

A. Hemibangarus
B. Hemichordates
C. Hemicyclaspis
D. Hemidactylus

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Caudal Autotomy":**
- Caudal autotomy refers to the ability of certain organisms to detach their tail (caudal) as a defense mechanism. This process allows the organism to escape from predators while leaving part of its body behind.

**Hint:** Look for the definition of caudal autotomy to understand its significance in animal behavior.

2. **Identifying the Organisms:**
- The question provides four options: hemibangaris, hemicordates, hemicyclapsis, and hemiductylis. We need to determine which of these organisms exhibit caudal autotomy.

**Hint:** Analyze the names of the organisms to see if any are commonly known for tail detachment.

3. **Understanding the Mechanism of Autotomy:**
- Autotomy involves self-detaching a body part, which can then regenerate. This is a survival strategy to minimize blood loss and trauma to surrounding tissues.

**Hint:** Consider the evolutionary advantages of being able to detach a tail when threatened.

4. **Recognizing Examples of Caudal Autotomy:**
- A well-known example of an organism that exhibits caudal autotomy is the lizard. Lizards can shed their tails when threatened, and they belong to the group known as hemiductylis.

**Hint:** Think about common reptiles and their defense mechanisms to identify examples of caudal autotomy.

5. **Selecting the Correct Answer:**
- Among the provided options, hemiductylis is recognized as the group that includes lizards, which are known for their ability to undergo caudal autotomy.

**Hint:** Cross-reference the options with known biological classifications to find the correct answer.

### Final Answer:
- Caudal autotomy is exhibited by **hemiductylis** (lizards).