Which element of the angiosperm is long, tube like and associated with the companion cell ?

Options

A. Sieve cell
B. Sieve tube element
C. Tracheid
D. Vessel element

Answer

To answer the question "Which element of the angiosperm is long, tube-like and associated with the companion cell?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components of Angiosperms**:
- Angiosperms are flowering plants that have specialized structures for the conduction of water and nutrients. The two main types of vascular tissues are xylem and phloem.

2. **Identify the Role of Companion Cells**:
- Companion cells are specialized parenchyma cells found in the phloem. They are closely associated with sieve tube elements and play a crucial role in the transport of nutrients.

3. **Define Sieve Tube Elements**:
- Sieve tube elements are the main conducting cells in the phloem. They are long, tube-like structures that facilitate the transport of sugars and other organic nutrients throughout the plant.

4. **Differentiate Between Xylem and Phloem**:
- Xylem is responsible for the transport of water and minerals, and it includes vessel elements and tracheids. These do not have companion cells.
- Phloem, on the other hand, includes sieve tube elements and companion cells, which work together to transport food.

5. **Conclude the Answer**:
- Since the question specifically asks for the element that is long, tube-like, and associated with companion cells, the correct answer is **sieve tube element**.

### Final Answer:
The element of the angiosperm that is long, tube-like, and associated with the companion cell is the **sieve tube element**.

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