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Seeds of 'Hop' can be distinguished from that of cannabis by the presence of :

  • A.Endospermic shell
  • B.Tortoise shell
  • C.Shrivelled shell
  • D.Hard shell

Answer: B

The key's answer is Tortoise shell. I could not find a published description of hop seeds in these words, so this follows the key.

Hop (Humulus) is a close relative of cannabis: both belong to the family Cannabaceae, so their fruits can look alike, and a seed examiner needs a feature that tells them apart. The key names a tortoise-shell surface as that feature of the hop seed.

The other three terms, endospermic shell, shrivelled shell and hard shell, are not features I could match to the seed-identification literature, so they are eliminated only on the key's reading.

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