Lecture 5: Basal Angiosperm Families

Question 1

Laticifers

Answer 1

unique cells that produce latex

Question 2

latex

Answer 2

a sticky emulsion of hydrocarbons, proteins,
sugars, and metabolites

Question 3

Nymphaeaceae

Answer 3

water lily family
Dicot Basal group
stamens integrating with petals
Tepals can be fused
*,-4-12-,0-infinity,3-infinity,1-infinity; nut, berry

Question 4

Magnoliaceae

Answer 4

Magnolia Family
Dicot Basal Group
stamens many and free
fused carpels?
*,-6-,infinity, infinity; follicle

Question 5

Ranunculaceae

Answer 5

Crowfoot family
Primitive eudicot
really defined filaments
lots of stamens and carpels
*,-4-infinity- (or 5), 5, infinity, 1-infinity; follicles, achenes, berry

Question 6

Cactaceae

Answer 6

New world cactus- has spines=modified leaves,
CAM metabolism: stomata open during the night and CO2 is stored as malic acid
shallow roots
* or X, -infinity-, infinity, 3-8; berry
inferior ovary

Question 7

Droceraceae

Answer 7

Sundews
thigmotropism- hairs are touch sensitive and stimulate the plant to close
live in acidic environments- bogs and peatlands

Question 8

polygonaceae

Answer 8

buckwheat family
swollen nodes
includes important grains
*,-5-6, 6-9, 2-3;achene
superior ovary

Question 9

saxifragaceae

Answer 9

colourful alpine plants
cushion plants grow on rocks
cold tolerant
has hypanthium
*,4-5,4-5,5-10,2-5;capsule, follicles
superior ovary

Question 10

Euphorbaceae

Answer 10

spurge family
old world cactus
has cyathium flower (gynoecium)
surrounded by a whorled arrangement of staminate flowers
contain laticifers which produce latex. Schizocarp= dry fruit with 2 or more carpels that split into 1-seed segments

Question 10

Features of primitive plants
give example of primitive family

Answer 10

MANY stamens
has tepals and radial symmetry
includes:
Nymphaceae
Ranunculaceae
Cactaceae

Question 11

Eudicot features

Answer 11

Tricolpate pollen (3-grooves)
two cotyledons
floral parts in 4s or 5s
thin filaments
whorled, alternating flower parts