Ch. 38.1—Angiosperm Reproduction & Biotechnology Flashcards
________, _________, and ________ are key features of the angiosperm life cycle.
- Flowers
- Double Fertilization
- Fruits
In angiosperms the ________ phase is the plant that we see.
-Sporophyte.
Flowers are reproductive shoots of the angiosperm sporophyte; they attach to a part of the stem called the ________.
-Receptacle.
Flowers consists of what 4 different floral organs:
- Carpels.
- Stamens.
- Petals.
- Sepals.
______ and ________ are reproductive organs.
- Stamens.
- Carpels.
_______ and _______ are sterile.
- Sepals.
- Petals.
A carpel has a long style with a _______ on which _______ may land
- Stigma.
- Pollen.
At the base of the style is an _______ containing one or more ovules
-Ovary.
A single carpel or group of fused carpels is called a:
-Pistil.
A stamen consists of a filament topped by an ________ with pollen sacs that produce pollen.
-Anther.
Clusters of flowers are called:
-Inflorescences.
4 general trends seen in the evolution of flowers:
- Bilateral symmetry
- Reduction in the number of floral parts
- Fusion of floral parts
- Location of ovaries inside receptacles
The angiosperm life cycle includes (4):
- Gametophyte development
- Pollination
- Double fertilization
- Seed development
Each microspore undergoes mitosis to produce what two cells?
- Generative cell.
- Tube cell.
A ______ _______ consists of the two celled male gametophyte and the spore wall
-pollen grain.
The development of a seed into a flowering plant includes several stages (6):
- Endosperm development
- Embryo development
- Seed dormancy
- Seed germination
- Seedling development
- Flowering
Germination depends on _________, the uptake of water due to low water potential of the dry seed
-Imbibition.
The ________ (embryonic root) emerges first; the developing root system anchors the plan
-Radicle.
A ______ is the mature ovary of a flower.
-Fruit.
What are the 4 classification of fruits based on their developmental origin?
- Simple fruits.
- Aggregate fruits.
- Multiple fruits.
- Accessory fruits.
_____ fruits develop from a single or several fused carpels.
- Simple.
* Pea fruit*
______ fruits result from a single flower with multiple separate carpels.
- Aggregate.
* Raspberry fruit*
_____ fruits develop from a group of flowers (inflorescence).
- Multiple.
* Pineapple fruit*
______ fruit contains other floral parts in addition to ovaries.
- Accessory.
* Apple fruit*
