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Phylum Anthophyta (Angiosperms)
Angiosperms
47
Biology
Undergraduate 1
12/11/2013

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Term
Angiosperms
Definition
Most sucessful plant type in Kingdom Plantae
Term
Angiosperm Traits
Definition
  • Diverse sporophyte morphology (folwers, herbs, shrubs, trees, etc).
  • Flowers (spore and gametophyte production)
  • Seeds dispersed in fruits
  • Coevolution with animals for pollintation and seed dispersal
Term
Flower
Definition

A highly modified determinate shoot that produces 4 whorls

  • carpels
  • stamen
  • petals 
  • sepals
Term
Superior Ovary Position
Definition
Outer three whorls (stamen, petals, sepals) attach below the ovary
Term
Inferior Ovary Position
Definition
Outer three whorls (stamen, petals, sepals) are attached ABOVE the ovary
Term
Stamen
Definition
Made up of an ANTHER and a FILAMENT
Term
Carpel
Definition
Made up of a STIGMA, STYLE, and OVARY
Term
Perianth
Definition

Collective terms for PETALS and SEPALS

(two outermost whorls)

Term
Receptacle
Definition
Location where all 4 whorls attach
Term
Anthophyta Life Cycle
Definition

Ovaries & Ovule development

Anthers & Pollen development

 

Double Fertilization

Term
Double Fertilization
Definition

Egg (n) + Sperm (n) --fert--> Zygote (2n) --MEI--> Embryo (2n)

 

&

 

Endosperm M.C (n+n) + Sperm (n) --fert--> Primary Endosperm Nucleus (3n)--MIT--> Endosperm (3n)

Term

Function of Endosperm (3n)

 

Definition
Food for the EMBRYO
Term
Dikaryotic (n+n) Cells
Definition
Cells that contain two unfused haploid nuclei
Term
Ovary Wall
Definition

Becomes FRUIT

 

Lines outer edge of ovary

Term
Locule
Definition
Space holding the ovule within an ovary
Term
Ovule
Definition

Becomes SEED

 

Central chamber location within an ovary

Term
Funiculus
Definition
Holds the space in which the ovule is located in an ovary
Term
Placentae
Definition
Location where funiculus attaches to adgacent side
Term
Ovule Development
Definition
  • Integument
  • Nucellus
  • Megaspore Mother Cell
  • Endosperm & 2n Embryo (result)

Meiosis-- mitosis x2 w/o cytokinesis-- mitosis w/ cytokinesis

Term
Anther XS
Definition
Butterfly looking structure with 4 microsporangium which contain a microspore mother cell lines with a tapetum
Term
Tapetum
Definition
Nourishment for growing microspores and deposit pollen wall
Term
Mechanisms to promote cross pollination
Definition

1. Diecious sporophyte - plants produce impoerfect flowers (kiwi)

2. Dichogamy - stamens & carpels mature at different times.

3. Self- Incompatability: plant regects own pollen

Term
Eudicot "Bean"
Definition

Seed Coat

Hilum

2 Cotyledons

Embryo

 

 

Term
Monocot "Bean"
Definition

Seed Coat

Hilum

1 Cotyledon

Embryo

Term

Embryo Morphology (top-->bottoms)

 

Definition
SAM, Epicotyl, Hypocotyl, Radical, RAM
Term
Fruit
Definition
Derived from an ovary and contains seeds
Term
Vegetable
Definition
Composed of any other plant part besides ovary and does NOT contain seeds
Term
Seed Dispersal Mechanicsms
Definition

1. Wind (wings)

2. Water (floating fruits)

3. Self (discharge seeds)

4. Animal Injestion (fleshy tissue)

5. Animal Attachment: (barbs, burs, bristles)

Term

Simple Fruit

 

Definition
Derived from a single flower  with a syncarpous gynoecium
Term
Aggregate Fruit
Definition

Derived from a single flower with an apocarpus gynoecium (Fruitlets: blackberry, raspberry, etc.)

 

Term
Multiple Fruit
Definition

Derived from an entire inflorescence 

(pineapple, fig)

Term
Accessory Fruit
Definition

"Fruit" is made of more than just the ovary 

(Strawberry- achene: eating receptacle)

(rosehips)

Term
Hypanthium
Definition
Adnation between sepals, petals & stamen
Term
Pericarp
Definition

1. Exocarp: outermost layer

2. Mesocarp: middle layer (often fleshy)

3. Endocarp: Innermost Layer

Term
Dehiscent Fruit
Definition
Splits open to release seeds
Term
Indehiscent
Definition
Remains intact for seed dispersal (does not split open)
Term
Life Strategies for Anthophyta
Definition

1. Annual

2. Biennial

3. Perennial

Term
Annual Life
Definition

A plant whose life cycle is completed in a single year 

(wheat, tomatoes)

Term
Biennial Life
Definition

A plant whose life cycle requires two years

(carrots, onions)

Term
Perennial
Definition

Long lived plants that flower and fruit many times during their lifetime

(Apples, oaks)

Term
What happens evolutionarily between SVP's and Gymnosperms
Definition

- Seeds

-Pollination

-2nd growth

-Loss of Antheridium

Term
What happens evolutionarily between Gymnosperms and Angiosperms?
Definition

-loss of archegonium

-flowers & fruits

-double fertilization

-vessel elements in xylem

-sieve tube elements in phloem

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