Term
|
Definition
-plant produces 2 kinds of spores.
- megasporagngium which produce megaspores and give rise to female gametophyte
- and microsporangia which produce microspors which give rise to male gametophytes
-microsporangium has a vast number of microspores while the megasporangium has has only one single functional megaspore |
|
|
Term
|
Definition
- contains the megasporangium, megaspore
- inside each ovule a female gametophyte develops from a megaspore and produces one or more eggs |
|
|
Term
|
Definition
| - a microspore develops into this and consists of a male gametophyte enclosed within the pollen wall |
|
|
Term
|
Definition
| - The transfer of pollen to the part of a seed plant that contains the ovule |
|
|
Term
|
Definition
- member of the largest gymnosperms phylum.
- Most confiers are cone-bearing trees, such as pines and firs |
|
|
Term
|
Definition
- is angiosperm structure specialized for sexual reproduction
- is a specialized shoot that can have up to four rings of modified leaves (sporophylls) called floral organs, sepals, petals, stamen & carpels |
|
|
Term
|
Definition
| - usually green and enclose the flower before it opens up (rosebud) |
|
|
Term
|
Definition
- interior to the sepals, brightly colored in most flowers
- and aid in attracting pollinators |
|
|
Term
|
Definition
- male part of flower
- produce microspores that develop into pollen grains, containing male gametophytes
- consist of filament and anther |
|
|
Term
|
Definition
|
|
Term
|
Definition
| - where pollen is produced |
|
|
Term
|
Definition
- female part
- make megaspores and their products, female gametophytes contain stigma, ovary & style |
|
|
Term
|
Definition
| - is sticky, and receives the pollen |
|
|
Term
|
Definition
| - leads from the stigma to the ovary |
|
|
Term
|
Definition
| - contains one or more ovules, if fertilized an ovule deveops into a seed |
|
|
Term
|
Definition
| - mature ovary but can also include other flower parts |
|
|
Term
|
Definition
- in angiosperms it is the transfer of pollen from an anther of a flower on one plant to the stigma of a flower on another plant of the same species
- enhances genetic variability |
|
|
Term
|
Definition
- when one sperm fertilizes the egg, forming a diploid zygote. the Other sperm fuses with the two nuclei in the large cell.
- in this type of DF, in which one fertilization event produces a zygote and the other produces a triploid cell is unique angiosperms |
|
|
Term
|
Definition
| - The zygote develops into a sporophyte embryo with a rudimentary root and one or two seed leaves |
|
|
Term
|
Definition
- What the triploid central cell of the female gametophyte develops into
- tissue is rich in starch and other food reserves that nourish the developing embryo |
|
|
Term
|
Definition
| - a term that is traditionally used to refer flowering plants that have 2 embryonic seed leaves, or cotyledons. They do not form a clade. |
|
|
Term
|
Definition
- vast majority of species that were once categorized as dicots
- contains two embryonic seeds |
|
|
Term
|
Definition
| - species with one cotyledon |
|
|
