Term
| What does an ovule consist of? (3 things) |
|
Definition
megasporangium
megaspore
protective integuments on a sporophyll |
|
|
Term
| What do Microspore contain? |
|
Definition
| male gametophytes of plants |
|
|
Term
| What deveops into pollen grains? |
|
Definition
|
|
Term
|
Definition
| The transfer of pollen to the ovules |
|
|
Term
| What lack flagella? (2 things) |
|
Definition
| most gymnosperms and all angiosperms |
|
|
Term
| How is pollen and production of sperm transported? |
|
Definition
- air (resistant, far-traveling)
- dispersed by animals
|
|
|
Term
| What does an ovule conisist of? |
|
Definition
| A megasporangium, megaspore, and protective integuments on a sporophyll |
|
|
Term
|
Definition
| modified leaf that has a spore producing structure |
|
|
Term
| A seed may ____ ____ until favorable conditions trigger germination |
|
Definition
|
|
Term
| What are three things that disperse seeds? |
|
Definition
|
|
Term
| The seed protects the ____ until conditions become favorable |
|
Definition
|
|
Term
| Think-pair-share: Provide examples why seed dispersal is important? |
|
Definition
Availability of resources:competition
spreads individual of populations to new environments |
|
|
Term
|
Definition
| the "naked" part on seeds, typically cones |
|
|
Term
| Angiosperm seeds are found in ___, which are mature____. |
|
Definition
|
|
Term
| Four phyla of gymnosperms |
|
Definition
Cycadophyta (Cyads)
Gingkophyta (Ginkgo)
Gnetophyta
Coniferophyta (conifer) |
|
|
Term
| Which is that largest gymnosperm phylum? |
|
Definition
|
|
Term
| Coniferophyta cone clusters of ___ and most are ______. |
|
Definition
|
|
Term
| Early gymnosperm lived in ecosystem dominated by _____ _____ _____. |
|
Definition
|
|
Term
| What caused the favored spread of gymnosperms? |
|
Definition
| drying of climatic conditions |
|
|
Term
| Whats the advantage with having a short/ protected gametophytic stage? |
|
Definition
| To help protect it from the environment (High light/ high humidity) |
|
|
Term
|
Definition
| Megaspores that give rise to female gametophytes |
|
|
Term
|
Definition
| Microspores that give rise to male gametophytes |
|
|
Term
| What does it mean when a plant is Heterospory? |
|
Definition
| That they produce both microspores and megaspores (sex differation in plants) |
|
|
Term
| What were two key adaptations for life on land? |
|
Definition
|
|
Term
| What four things did seeds and pollen grains bring for life on land? |
|
Definition
Reduction in gametophytes
Heterospory
Ovules
Pollen |
|
|
Term
| What were the dominant producers in most terrestrial ecosystems? |
|
Definition
| gymnosperms and angiosperms |
|
|
Term
| How long ago did seed plants orginate? |
|
Definition
|
|
Term
| What does a seed consist of? |
|
Definition
| an embryo and nutrients surrounded by a protective coat |
|
|
Term
| What changed the course of plant evoution? |
|
Definition
|
|
Term
| How did seeds change the course of plant evolution? |
|
Definition
| By enabling their bearers to become the dominant producers in most terrestrial ecosystems |
|
|
Term
| Name the order of land plant phyla from oldest to youngest (7 plants) |
|
Definition
- Liverworts
- Hornworts
- Mosses
- Lycophytes
- Pterophytes
- Gymnosperms
- Angiosperms
|
|
|
Term
| When was the orgin of land plants? |
|
Definition
|
|
Term
| When was the origin of vascular plants? |
|
Definition
|
|
Term
| When was the origin of extant seed plants? |
|
Definition
|
|
