BOT 360F - Families of Vascular Plants

Quiz 9 17-Nov-11


(1)To which of the diagrams below do the terms heterogamous and homogamous apply?

homo- and heterogamous heads

For extra credit, for each term name a genus from last week’s lab to which the term applies.


heterogamous: e.g. Solidago, Symphyotrichum, Helianthus, Galinsoga, Bidens

homogamous: e.g. Tragopogon, Taraxacum, Cichorium, Sonchus (seen in lab)



(2) Are the reproductive structures seen here derived from ONE or MANY flowers? Please circle the correct answer.

Actaea pachypoda Many flowers.  

(3a) To what family do the plants illustrated her most likely belong?

(3b) In this family is the corolla apopetalous or sympetalous? See (B).

(3c) In the lower portion of the illustration, what perianth component is most conspicuous?

quiz 9 graphic







(a) Asteraceae

(b) sympetalous

(c) calyx
(half marks for the more restrictive term "pappus," because the question referred to the more general category, perianth, which may apply to any flower)



(4) To what family does this plant most likely belong?

<Judd et al. (2002) CD image of mustard flower partly dissected, in elevation view>



(5) Are the flowers seen here all ray florets or all disk florets?

Cichorium intybus

All ray florets.

Click HERE for Quiz 9 in 2010.

| What are plant families? | How do we distinguish them? | How and why do we study them? | Selected vascular plant families of Ontario | Reading List | Course outline |

|EEB337H1 Home Page | What's New | U of T Ecology & Evolutionary Biology | University of Toronto |

© 2011 Department of Ecology & Evolutionary Biology, University of Toronto.

Please send your comments to; last updated 22-Nov-2011