Lab 7: Eudicots 2

Question 1

Fabaceae characteristics

Answer 1

• Leaves alternate and pinnately compound or trifoliate
• Bisexual, zygomorphic flowers
• papillionate (butterfly-shaped) corollas
• produce legume fruits (made from a single carpel, marginal placentation). Dehiscent or indehiscent

Question 2

What are the parts of the papillionate corolla in Fabaceae plants?

Answer 2

• A standard (banner): 1 large upper petal
• 2 wings: petals on both sides of the standard
• Keel: two lower petals fused together (shape of a boat)

Question 3

Vivia cracca (vetch)

Answer 3

Faboideae (sub-family of Fabaceae)
1 carpel
Diadelphous stamens: 9 fused + 1free
Raceme inflorescence
Each bean pod is derived from 1 flower
Multiple seeds coming from 1 simple ovary (1 carpel)

Question 4

Trifolium pratense (red clover)

Answer 4

Faboideae
Diadelphous
Has banner, wings, and keel

Question 5

Rosaceae characteristics

Answer 5

Compound leaves
5-merous flowers
Many stamens
–> similar to Ranunculaceae

However, Rosaceae can be woody or herbaceous
vary in ovary placement and # of carpels

Distinguishing feature: hypanthium

Question 6

Rosa (genus)

Answer 6

Generally 5-merous (but # petals varies a lot)
Many separate carpels, each with one seed
Always has a hypanthium (derived from receptacle tissue)
Perigynous (half-inferior) ovary
Radially symmetrical
Many stamens

Question 7

Urticaceae characteristics

Answer 7

Herbaceous
Opposite toothed leaves
Monoecious or diecious
Usually have stinging hairs
Inflorescences attached to main stalk (where leaves are attached) –> often drooping down
Inconspicuous, small, green or pale flowers
- 4-merous
- unisexual

Question 8

Cucurbitaceae characteristics

Answer 8

• Sympetalous flowers (having the petals fused along their margins to form a tubular shape)
• Unisexual flowers
• Monoecious
• Herbaceous vines
• Alternate, palmately lobed leaves and tendrils
• Fruit a pepo (type of berry)

Question 9

Echinocystis lobata

Answer 9

Cucurbitaceae family
pepo fruit (spikey fruit)
- dry when mature and split open

Question 10

Fagales characteristics

Answer 10

Catkins: male and female inflorescences separate
- male pendulous
- female wind-pollinated

No perianth or reduced

Fagaceae:
- monoecious with unisexual flowers, reduced perianth