UBC BIO 210 Exam Questions with Correct Answers

UBC BIO 210 Exam Questions with Correct Answers What defines vascular plants? - Answer-1. Sporophyte is dominant, independent and branched. 2. Contain xylem (lignin) and phloem. What kind of branching do lycophytes have? - Answer-Dichotomous. What is dichotomous branching? - Answer-When the meristem divides in two. Are lycophytes microphyllous or megaphyllous? - Answer-Microphyllous. What is microphyll? - Answer-A plant leaf with one single, unbranched vein. Are leaf traces present in lycophytes? - Answer-No. Where do endogenous roots in lycophytes arise? - Answer-From the pericycle of the stem. Where are sporangia borne on lycophytes? - Answer-On the adaxial surface of leaves called sporophylls. What does plectostele arrangement mean? - Answer-When xylem is interrupted by phloem plates. What kind of xylem maturation does a plectostele arrangement have? - Answer-Exarch. Compare root and stem anatomy in lycophytes. - Answer-They are very similar. Both are protostele or plectostele. How do roots in lycophytes branch? - Answer-Dichotomously. How are sporophytes in Lycopodia arranged? - Answer-In a cone or strobilus. Are Lycopodia homosporous or heterosporous? - Answer-Homosporous.