Siphon of cephalopods is connected internally to

Options

A. Mantle cavity
B. Ink gland
C. Haemocoel
D. BothA and B

Answer

To solve the question "Siphon of cephalopods is connected internally to," we can follow these steps:

### Step 1: Understand the Structure of the Siphon
The siphon in cephalopods is a tube-like structure that plays a crucial role in their physiology. It is primarily involved in the movement of water.

**Hint:** Think about the function of the siphon in cephalopods and how it interacts with other internal structures.

### Step 2: Identify the Internal Connections
The siphon is connected internally to the mantle cavity. The mantle cavity is the space between the mantle (the outer covering) and the body of the cephalopod, where various physiological processes occur.

**Hint:** Consider what the mantle cavity is and its role in the life of a cephalopod.

### Step 3: Evaluate the Options Given
The options provided are:
- A) Mantle cavity
- B) Ink gland
- C) Hemocoel
- D) Both A and B

Since the siphon is primarily connected to the mantle cavity, we can eliminate options B and C. Option D is also incorrect because the siphon is not connected to the ink gland.

**Hint:** Focus on the primary connection of the siphon rather than secondary functions or structures.

### Step 4: Conclude the Answer
Based on the understanding that the siphon is internally connected to the mantle cavity, the correct answer is option A.

**Final Answer:** The siphon of cephalopods is connected internally to the mantle cavity (Option A).