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प्रश्न
Which of the following statements is not correct?
विकल्प
Deoxygenated blood is poured into the right atrium of the heart.
The excretory units of flatworms are flame cells.
Human kidney has about 1 million nephridia.
Tracheids and vessels are non-living conducting tissues.
MCQ
उत्तर
Human kidney has about 1 million nephridia.
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