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Earthworm has no skeleton but during burrowing the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to

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Important Questions on Animal Diversity - I (Invertebrate Phyla)

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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 53
In earthworm, blood from seminal vesicle is collected by
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 54
Which of the following is absent in the coelomic fluid of earthworm?
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 55
The septal and pharyngeal nephridia open into the alimentary canal and are enteronephric type. It is an adaptation for
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 56
The body cavity of earthworm represents a true
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 57
The nephridia found most in number are
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 58
Which one of the following is not hermaphrodite animal?
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 59
Pheretima posthuma (earthworm) is highly useful as
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NEET / EAMCET Biology Crash Course>Chapter 22 - Animal Diversity - I (Invertebrate Phyla)>EXERCISE>Q 60
Copulation in earthworm occurs during