19. The Casparian strip functions primarily to: (A) Increase water uptake efficiency (B) Prevent apoplastic flow into the stele (C) Facilitate phloem loading (D) Strengthen root cortex

9. Which feature best distinguishes bryophytes from vascular plants with respect to life-cycle dominance? (A) Bryophytes possess a dominant sporophyte with vascular tissues (B) Bryophytes rely onon seeds for embryo nourishment (C) Bryophytes have a dominant gametophyte generation that supports a dependent sporophyte (D) Bryophytes exhibit equal dominance of both generations

19. The Casparian strip functions primarily to:
(A) Increase water uptake efficiency
(B) Prevent apoplastic flow into the stele
(C) Facilitate phloem loading
(D) Strengthen root cortex

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