Botany Name: 113
Lab sect. (TA/time): Spring 2002 5/17/02
Second Hourly Exam
1) (30 pts) Match the letter of the family on the right with the unknown plant described on the left. Not all of the families will be used, but all plant descriptions should be matched to a family . 3-winged achenes; 3-parted flowers; Ocrea surrounding stem at base of leaf 4 fused carpels; 4 sepals; 4 petals; inferior ovary Fruit a silique; cruciform petal arrangement; 2 fused carpels No perianth; dioecious trees; alternate leaves; hairy seeds Capitate style; epipetalous stamens; radial symmetry; alkaloids Capsular fruit; fused corolla; helicoid cyme; deeply divided style; Radial floral symmetry; flowers in a scorpioid cyme; 2 carpels forming 4 nutlets; Green succulent stems; inferior ovary; many perianth parts; fruit a berry; Two petals fused, others free; bilaterial symmetry; compound leaves with entire margins Floral parts in 5; capsular fruit; opposite leaves; swollen nodes; 5 fused carpels; stellate hairs on stems; actinomorphic, polypetalous flowers; palmate leaf venation Tough, leathery leaves; urn-shaped flowers; 5 fused carpels Fruit a samaroid schizocarp; trees with opposite leaves; palmate leaf venation Superior ovary; succulent leaves; two sepal-like bracts; many tepals Zygomorphic flowers; 5-parted perianth; petals not fused; 3 fused carpels A) Aceraceae B) Boraginaceae C) Brassicaceae D) Cactaceae E) Caryophyllaceae F) Ericaceae G) Fabaceae H) Hydrophyllaceae I) Malvaceae
J) Onagraceae K) Polemoniaceae L) Polygonaceae M) Portulacaceae N) Rosaceae O) Salicaceae P) Saxifragaceae Q) Solanaceae R) Violaceae
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2) (14) Fill in the following table in information about the androecium (stamens). Each row should have a descriptive term for the anther or anther arrangement, a family in which it is found and a description of the condition. One cell of each row is filled in for you and you have to fill in the other appropriate spaces. The first row is filled in as an example. Term Family Description (may include illustration)
Versatile anther
Onagraceae
Anther attached to filament is such a way that it can rock back and forth readily.
Malvaceae
Diadelphous
Brassicaceae
No term available
Two nectar producing stamens in the petal spur
3) (3) You notice books two in the library. One is called The Flora of Australia and the other is called The Vegetation of Australia. Describe the difference in the content of these two books.
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4) (15) Provide short definitions or explanations for the following (you may supplement with a drawing, but dont just answer with a drawing): Distyly
Perisperm
Endemic species
Areole
Free-central placentation
5) (10) Here are five traits commonly found in families assigned to the Asteridae. Single integument Two fused carpels Iridoid secondary compounds Fused corollas Ovules with a thin nucellus (tenuinucellate ovulets) Which of these five traits are considered to be synapomorphies for the group as recognized today.
Name one of the traits that IS NOT a synapomorphy and identify a family that does not have this trait, but is still assigned to Asteridae.
Name one of the traits that IS considered to be a synapomorphy and identify a family that does not have this trait.
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6) (12) Circle the best answer from the choices available with each question. Which of the following is NOT a mechanism used by plants to prevent self-pollination? a) Physical separation of stamens and stigmas b) Protandry c) Geitonogamy d) Dioecy e) Self-incompatibility Which term refers to flowers that self-fertilize in the bud without ever opening? a) Cleistogamy b) Distyly c) Apomixis...