Question Detail
Question
Within a mature hornwort sporophyte, what central rod-like structure is present?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Page 22 notes that 'A mature sporophyte has a multicellular outer layer, a central rod-like structure called columella running up the center, and a layer of tissue in between that produce spores and pseudo-elaters.'
Hint
The term refers to a specific structural feature inside the horn-shaped sporophyte.