Term
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Definition
| Where the organism makes its own amino acids, sugars and other nutrients |
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Term
| Complete the life cycle[image] |
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Definition
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Term
| What are the names of the two generations plants have? |
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Definition
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Term
| What are the main feature/s of the sporophyte generation? |
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Definition
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Term
| What are the main feature/s of the gametophyte generation? |
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Definition
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Term
| Which generation is dominant in mosses? |
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Definition
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Term
| What are the features of gametophytes in mosses? |
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Definition
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Term
| What is the requirement for reproduction for mosses? |
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Definition
| Water is required because sperm is produced |
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Term
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Definition
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Term
| Which generation is dominant in ferns? |
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Definition
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Term
| What is the main feature of the gametophytes in ferns? |
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Definition
| They are all the same - homosporous |
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Term
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Definition
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Term
| What four features link the phyla Cycads, Conifers and Magnoliophyta? |
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Definition
-all produce sperm that swim to the egg
-all have separate sporophyte and gametophyte stages
-all have vascular systems
-all are heterosporous |
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Term
| Where do cycads produce ovules, seeds and pollen? |
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Definition
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Term
| What are the two types of spores in cycads and which gametophyte do they produce? |
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Definition
Megaspores - produce female gametophytes
Microspores - produce male gametophytes |
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Term
| Are cycads both male and female? |
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Definition
| No, they are one or the other |
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Term
| Are conifers both male and female? |
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Definition
| Yes, but the cones are either male or female |
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Term
| What are four features of conifers (unrelated to reproduction cycle)? |
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Definition
-they have resin canals impregnated in wood
-they are the largest and longest living organism ever to inhabit the earth
-they dominate many ecosystems
-they are well adapted to live in dry conditions |
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Term
| How are conifers adapted to reproducing in dry conditions? |
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Definition
-evolved ovules to protect ova
-evolved pollen to distribute sperm
-evolved ovules that turn into seeds with a food store |
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Term
| What are 5 features of magnoliophyta (unrelated to reproduction cycle)? |
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Definition
-flowering plants
-250,000 species
-dominate terrestrial vegetation
-produce most of food driving terrestrial ecosytems
-important in CO2 and water cycles |
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Term
| What pollen can germinate when it lands on the stigma of magnoliophyta? |
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Definition
| Pollen containing sperm from the same species but a different plant |
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Term
| What does the ovule and pistol form when magnoliophyta are fertilised? |
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Definition
| Ovule becomes seed, pistol becomes fruit |
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Term
| How does the sperm get to the ova in magnoliophyta? |
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Definition
| Pollen creates a tube by digesting pistol and sperm cells move down the tube |
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