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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
Options
(a) Gut peristalsis
(b) Setae
(c) Coelomic fluid
(d) Blood
Correct Answer:
Coelomic fluid
Explanation:
Hydraulic skeleton is the system of support found in soft bodies invertebrates, which relies on the incompressibility of fluids contained within the body cavity. In earthworms the coelomic fluid is under pressure within the coelom and therefore provides support for internal organs. Due to hydraulic skeleton, during burrowing, the anterior end becomes turgid and aids in relaxation of longitudinal muscles.
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Topics: Plant and Animal Kingdom
(295)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- How many pairs of sympathetic ganglia are present in ANS
- Which of the following is not syncytial?
- The letter T in T -lymphocyte refers to
- Morphactins are
- Which of the following endo parasites of humans does show viviparity ?
Topics: Plant and Animal Kingdom (295)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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