Animals belonging to phylum _____________ are fundamentally characterised by the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits.
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Which among the following have a perfect pair of sex chromosomes?
In humans, the sound is produced by the ________.
What is the function of guard cells of stomata?
___________ is a typically onecelled, reproductive unit capable of giving rise to a new individual without sexual fusion.
Clove is obtained from
Which of the following induces nitrogen fixation in soil?
Which of the following bears flowers?
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