For Exam 3 - Chapter 13 Flashcards
Three main modes of nutrition for angiosperms
- Photosynthesis
- Parasitic
- Myco-heterotrophic
What is myco-heterotrophic?
An obligate relationship with fungi to fuel a plant
Are angiosperms a monophyletic group
Yes
Eudicots/dicots have
Flower parts in 4/5s
Tripaerture pollen
Two cotyledons
Netlike leaf vienation
2nd degree growth (wood)
Monocots have (list 5 features)
Flower parts in 3
Monopaterature pollen
One cotyledon
Parallel leaf venation
Herbaceous - no wood
What are the four whorls on a receptacle?
Calyx - sepals
Corolla - petals
Stames - male parts
Carpels - female parts
What is a stamen? What is composed of?
Male reproductive part of a flower
Composed of a filament (stalk) and anther
How many pollen sacs (microsporangia) does an anther have
4
What is a carpel? What is in it?
Female reproductive parts
Contains ovary (lower part that encloses ovules), style (stalk), and stigma (receives pollen)
What is a locule?
Ovary chamber
Placentation - what is it and types
Where the ovules are in a ovary
Parietal - on wall
Axile - on central column partitioned
Free central - ovules on central column with no partition
Where can a single ovule be located and term for that?
Basal - at the base of a one locule ovary
Apical - at the apex
Complete vs incomplete flower
Incomplete - has less than 4 whorls
Complete - has all 4
Imperfect vs perfect flowers
Imperfect - one gender unisexual
Perfect - bisexual
Connate vs adnate
Connate - (Of a structure) fused with the same whorl
Adnate - fused with another whorl
Superior ovary is located where?
Above the sepals and petals
What kind of symmetry does a actinomorphic flower have?
Radial
Word for a bilaterally symmetrical flower
Zygomorphic
Microphyle
Small opening in the ovule of a seed plant. Allows pollen tube to enter
What happen to the other 2 sperm that don’t fuse with the egg?
1 sperm fertilizes the polar nuclei and becomes the endosperm, other disintegrates
What do the ovule and ovary end up as?
Ovule - seed
Ovary - fruit
Dioecy
Separate male/female plants
Monoecy
Both sexes on one plant, flowers may be separate
Dichotomy
Stamens and carpel mature at different times in the same flower
