State whether following statement is true or false. If false, write the correct statement.
Pharyngeal gill-slits are present in non-chordates for respiration.
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Answer:
False
Explanation:
Pharyngeal gill slits are present at some stage of life in Chordates and it is completely absent in Non-chordates. The anus is differentiated and opens before the last segment in Chordates, whereas in Non-chordates it is either absent or opens at on the last segment.
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