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Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?
- a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.
- b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.
- c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.
- d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.
Correct answer is option 'B'. Can you explain this answer?
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Which of the following statements correctly describes the presence of ...
In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.
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Which of the following statements correctly describes the presence of ...
Presence of Notochord in Urochordata and Cephalochordata
The correct statement describing the presence of the notochord in Urochordata and Cephalochordata is option B, which states that in Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.
Urochordata
- In Urochordata, such as tunicates or sea squirts, the notochord is present only in the larval tail.
- The notochord is essentially a rod-like structure that provides support and rigidity to the body during the larval stage.
- However, as the Urochordata undergo metamorphosis into their adult form, the notochord degenerates and is mostly lost, with the adult forms lacking a persistent notochord.
Cephalochordata
- In Cephalochordata, represented by organisms like amphioxus or lancelets, the notochord extends from the head to the tail region.
- The notochord in Cephalochordata is persistent throughout their life, providing structural support and serving as a defining characteristic of this subphylum.
- The notochord in Cephalochordata plays a crucial role in maintaining body shape and aiding in locomotion.
In summary, while the notochord is only present in the larval tail of Urochordata and is lost during metamorphosis, it is a persistent structure extending from head to tail in Cephalochordata, playing a vital role throughout their life.
The correct statement describing the presence of the notochord in Urochordata and Cephalochordata is option B, which states that in Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.
Urochordata
- In Urochordata, such as tunicates or sea squirts, the notochord is present only in the larval tail.
- The notochord is essentially a rod-like structure that provides support and rigidity to the body during the larval stage.
- However, as the Urochordata undergo metamorphosis into their adult form, the notochord degenerates and is mostly lost, with the adult forms lacking a persistent notochord.
Cephalochordata
- In Cephalochordata, represented by organisms like amphioxus or lancelets, the notochord extends from the head to the tail region.
- The notochord in Cephalochordata is persistent throughout their life, providing structural support and serving as a defining characteristic of this subphylum.
- The notochord in Cephalochordata plays a crucial role in maintaining body shape and aiding in locomotion.
In summary, while the notochord is only present in the larval tail of Urochordata and is lost during metamorphosis, it is a persistent structure extending from head to tail in Cephalochordata, playing a vital role throughout their life.
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Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer?.
Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Which of the following statements correctly describes the presence of the notochord in Urochordata and Cephalochordata?a)In Urochordata, the notochord is present throughout the life and extends from head to tail, while in Cephalochordata, it is present only in the larval tail.b)In Urochordata, the notochord is present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.c)In both Urochordata and Cephalochordata, the notochord is present only in the larval tail.d)In both Urochordata and Cephalochordata, the notochord extends from head to tail and is persistent throughout their life.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
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