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A mature sieve tube differs from a vessel -
- a)In lacking a functional nucleus
- b)Absence of lignified walls
- c)Being nearly dead
- d)Lacking cytoplasm
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A mature sieve tube differs from a vessel -a)In lacking a functional n...
Solution :
The walls of vessels are lignified and hard and not very thick. Sieve tubes have thin cellulose walls.
Most Upvoted Answer
A mature sieve tube differs from a vessel -a)In lacking a functional n...
It's undoubtedly B, becz there is no lignification in the cell wall of mature sieve tube as they are living,But in case of vessel there is lignification occur that's why they r differ in this case.
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A mature sieve tube differs from a vessel -a)In lacking a functional n...
Understanding Sieve Tubes and Vessels
Sieve tubes and vessels are essential components of the plant vascular system, each serving distinct functions. Their structural differences are key to their respective roles in plant physiology.
Key Differences Between Sieve Tubes and Vessels
- Lack of Functional Nucleus:
- Sieve tubes do not have a functional nucleus at maturity, which is similar to vessels.
- Absence of Lignified Walls:
- This is the correct answer.
- Sieve tubes are composed of living cells that have thin, non-lignified walls, allowing flexibility and the ability to transport sugars and nutrients efficiently.
- On the other hand, vessels have thick, lignified walls that provide structural support and are primarily involved in the transport of water.
- Being Nearly Dead:
- While sieve tubes are often considered "alive" because they are functional in nutrient transport, they lack certain cellular components. Vessels, once mature, are essentially dead, facilitating rapid water transport.
- Lacking Cytoplasm:
- Sieve tubes do contain cytoplasm but are devoid of a nucleus and other organelles at maturity, which is why they still function effectively for transport.
Conclusion
In summary, the primary distinguishing feature of mature sieve tubes compared to vessels lies in the absence of lignified walls. This characteristic enables sieve tubes to maintain their role in the translocation of organic compounds throughout the plant while vessels are adapted for efficient water transport and support. Understanding these differences is vital for grasping plant structure and function, especially in the context of the NEET examination.
Sieve tubes and vessels are essential components of the plant vascular system, each serving distinct functions. Their structural differences are key to their respective roles in plant physiology.
Key Differences Between Sieve Tubes and Vessels
- Lack of Functional Nucleus:
- Sieve tubes do not have a functional nucleus at maturity, which is similar to vessels.
- Absence of Lignified Walls:
- This is the correct answer.
- Sieve tubes are composed of living cells that have thin, non-lignified walls, allowing flexibility and the ability to transport sugars and nutrients efficiently.
- On the other hand, vessels have thick, lignified walls that provide structural support and are primarily involved in the transport of water.
- Being Nearly Dead:
- While sieve tubes are often considered "alive" because they are functional in nutrient transport, they lack certain cellular components. Vessels, once mature, are essentially dead, facilitating rapid water transport.
- Lacking Cytoplasm:
- Sieve tubes do contain cytoplasm but are devoid of a nucleus and other organelles at maturity, which is why they still function effectively for transport.
Conclusion
In summary, the primary distinguishing feature of mature sieve tubes compared to vessels lies in the absence of lignified walls. This characteristic enables sieve tubes to maintain their role in the translocation of organic compounds throughout the plant while vessels are adapted for efficient water transport and support. Understanding these differences is vital for grasping plant structure and function, especially in the context of the NEET examination.
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A mature sieve tube differs from a vessel -a)In lacking a functional nucleusb)Absence of lignified wallsc)Being nearly deadd)Lacking cytoplasmCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A mature sieve tube differs from a vessel -a)In lacking a functional nucleusb)Absence of lignified wallsc)Being nearly deadd)Lacking cytoplasmCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A mature sieve tube differs from a vessel -a)In lacking a functional nucleusb)Absence of lignified wallsc)Being nearly deadd)Lacking cytoplasmCorrect answer is option 'B'. Can you explain this answer?.
A mature sieve tube differs from a vessel -a)In lacking a functional nucleusb)Absence of lignified wallsc)Being nearly deadd)Lacking cytoplasmCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A mature sieve tube differs from a vessel -a)In lacking a functional nucleusb)Absence of lignified wallsc)Being nearly deadd)Lacking cytoplasmCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A mature sieve tube differs from a vessel -a)In lacking a functional nucleusb)Absence of lignified wallsc)Being nearly deadd)Lacking cytoplasmCorrect answer is option 'B'. Can you explain this answer?.
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