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Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to
[2008]
- a)coelomic fluid
- b)blood
- c)gut peristalsis
- d)setae
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Earthworms have no skeleton but during burrowing, the anterior end bec...
Earthworms have no skeleton but during burrowing, anterior end becomes turgid and acts as a hydraulic skeleton. It is due to coelomic fluid. The coelom is filled with an alkaline milky coelomic fluid. This coelomic fliud contains water, salts, proteins and 4 types of cells namely amoebocytes, mucocytes, circular cells and chloragogen cells.
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Earthworms have no skeleton but during burrowing, the anterior end bec...
Hydraulic Skeleton in Earthworms
Earthworms, despite lacking a traditional skeleton, utilize a unique mechanism for movement known as a hydraulic skeleton. This is essential for their burrowing behavior.
Role of Coelomic Fluid
- The coelomic fluid is a fluid found within the coelom, which is a body cavity in earthworms.
- When the anterior end of the earthworm contracts, the coelomic fluid becomes pressurized, creating turgor.
- This pressure allows the earthworm to extend and anchor itself while burrowing into the soil.
Mechanism of Burrowing
- As the anterior end of the earthworm becomes turgid, it acts like a rigid structure, providing support.
- The segments of the worm can then contract and relax, allowing for controlled movement through the soil.
- This process is coordinated with the use of setae, small bristle-like structures that help grip the soil.
Importance of Coelomic Fluid
- The coelomic fluid is crucial for the locomotion of earthworms, especially in their moist soil environment.
- It also plays a role in nutrient transport and waste removal within the earthworm’s body.
Conclusion
In summary, the coelomic fluid is vital for the earthworm's ability to burrow effectively, acting as a hydraulic skeleton that enables movement and support without a rigid structure. This adaptation is key to their survival and ecological role in soil aeration and nutrient cycling.
Earthworms, despite lacking a traditional skeleton, utilize a unique mechanism for movement known as a hydraulic skeleton. This is essential for their burrowing behavior.
Role of Coelomic Fluid
- The coelomic fluid is a fluid found within the coelom, which is a body cavity in earthworms.
- When the anterior end of the earthworm contracts, the coelomic fluid becomes pressurized, creating turgor.
- This pressure allows the earthworm to extend and anchor itself while burrowing into the soil.
Mechanism of Burrowing
- As the anterior end of the earthworm becomes turgid, it acts like a rigid structure, providing support.
- The segments of the worm can then contract and relax, allowing for controlled movement through the soil.
- This process is coordinated with the use of setae, small bristle-like structures that help grip the soil.
Importance of Coelomic Fluid
- The coelomic fluid is crucial for the locomotion of earthworms, especially in their moist soil environment.
- It also plays a role in nutrient transport and waste removal within the earthworm’s body.
Conclusion
In summary, the coelomic fluid is vital for the earthworm's ability to burrow effectively, acting as a hydraulic skeleton that enables movement and support without a rigid structure. This adaptation is key to their survival and ecological role in soil aeration and nutrient cycling.
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Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to[2008]a)coelomic fluidb)bloodc)gut peristalsisd)setaeCorrect answer is option 'A'. 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 Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to[2008]a)coelomic fluidb)bloodc)gut peristalsisd)setaeCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to[2008]a)coelomic fluidb)bloodc)gut peristalsisd)setaeCorrect answer is option 'A'. Can you explain this answer?.
Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to[2008]a)coelomic fluidb)bloodc)gut peristalsisd)setaeCorrect answer is option 'A'. 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 Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to[2008]a)coelomic fluidb)bloodc)gut peristalsisd)setaeCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to[2008]a)coelomic fluidb)bloodc)gut peristalsisd)setaeCorrect answer is option 'A'. Can you explain this answer?.
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