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Q.
Comb plates for locomotion are found in:
NTA AbhyasNTA Abhyas 2020Animal Kingdom
Solution:
Ctenophores are characterized by eight rows of cilia, which are used for locomotion. The cilia in each row are arranged to form a stack of combs, also called comb plates; thus, the name ctenophore comes from the Greek word meaning 'comb bearer'.