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Which of the following is true ? 1 Ve...

Which of the following is true ?
1 Vessels are unicellular and with narrow lumen
2 Vessels are multicellular and with wide lumen
3 Tracheids are unicellular and with wide lumen
4 Tracheids are multicellular and with narrow lumen

A

Vessels are unicellular and with narrow lumen

B

Vessels are multicellular and with wide lumen

C

Tracheids are unicellular and with wide lumen

D

Tracheids are multicellular and with narrow lumen

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement about vessels and tracheids is true, we can analyze each option based on our understanding of their structure and function in the xylem. ### Step-by-Step Solution: 1. **Understanding Vessels**: - Vessels are part of the xylem and are responsible for the conduction of water and minerals. - Vessels are **multicellular** structures, meaning they are made up of multiple cells. - They have a **wide lumen**, which facilitates the efficient flow of water. 2. **Understanding Tracheids**: - Tracheids are also components of the xylem and serve a similar function in water transport. - Tracheids are typically **unicellular**, meaning they consist of a single cell. - They have a **narrow lumen**, which is less efficient for water transport compared to vessels. 3. **Evaluating Each Statement**: - **Statement 1**: "Vessels are unicellular and with narrow lumen." - This is **incorrect** because vessels are multicellular and have a wide lumen. - **Statement 2**: "Vessels are multicellular and with wide lumen." - This is **correct** as it accurately describes vessels. - **Statement 3**: "Tracheids are unicellular and with wide lumen." - This is **incorrect** because tracheids are unicellular but have a narrow lumen. - **Statement 4**: "Tracheids are multicellular and with narrow lumen." - This is **incorrect** because tracheids are unicellular, not multicellular. 4. **Conclusion**: - The only true statement among the options provided is **Statement 2**: "Vessels are multicellular and with wide lumen." ### Final Answer: **The correct option is Statement 2: Vessels are multicellular and with wide lumen.** ---
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