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Karteikarten von Shareef Akbari, aktualisiert more than 1 year ago
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Erstellt von Shareef Akbari
vor fast 8 Jahre
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| Frage | Antworten |
| Does Pteridophyta form a monophyletic group with seed plants? | Yes |
| Does Pteridophyta form a monophyletic group with seed plants? | Yes |
| What characteristics does Pteridophyta share with seed plants? | Megaphylls Multiflagellate sperm cells |
| Name all of the classes and orders within these classes for Pteridophyta | Psilotopsida Ophioglossales Psilotales Marattiales Equisetopsida Equisetales Equisetaceae Equisetum Polyposdiopsida Filicales Marsileceae Salviniaceae |
| What do pteridophyta look like? | Ferns |
| Are there any Pteridophyta that areepiphytic? And what does epiphytic mean? | Yes Grows on other plants and gets moisture and nutrients from them |
| What are the two kinds of sporangia Pteridophyta have? Describe them. | Eusporangia: Not that common Large Contains numerous spores Contains several layered wall Leptosporangia Very common Small Contains less spores Single layered wall with annulus |
| I am a Psilotopsida order that only makes one leaf a year. Who am i? | Ophioglossales |
| What is an anulus? | Layer of cells with unevenly thick walls. Contraction upon dehydration makes it tear and eject spores |
| What type of sporangia does Psilotopsida have? | Eusporangia |
| I am commonly called a "whisk fern". Who am I? | Psilotales |
| What are the general in the order Psilotales? | Psilotum Tmesipteris |
| What phylum does Psilotum resemble and why? | Rhynophyta Does not have roots or leaves as they lost them |
| What is a synangia? | Fused sporangia |
| What are the synangia of Psilotum composed of? And those of Tmesipteris? | Psilotum: 3 fused sporangia Tmesipteris: 2 fused sporangia |
| Are the spores of Psilotales homosporous or heterosporous? | Homosporous |
| Where are the gametophytes of Psilotales located? | Underground, combined with mycorrhizae |
| Which orders are the only eusporangiate ferns? | Psilotales Merattiales |
| Does Marattiales have synangia? | Yes |
| What is the taxonomic classification of horsetails? | Kingdom: Plantae Phylum: Pteridophyta Class: Equisetopsida Order: Equisetales Family: Equisetaceae Genus: Equisetum |
| What kind of leaves does Equisetum have? What kind of character is this? | Small, scale-like leaves Reduced, derived character |
| What is special about the epidermis of the Equisetum? | Contains Silica |
| Label this diagram and say where it is on the plant? | Internode |
| What is present at each node of Equisetum? | Whorl of reduced leaves or branches |
| Are spores of Equisetum homosporous or heterosporous? | Homosporous |
| What is a strobilus? | Collection of sporangia |
| What are the characteristics of the Equisetum gametophyte? | Green and free living Bisexual Multiflagellated sperm |
| What is the point of having archegonia and antheridia developing at different times on the same plant? | Prevents cross-fertilization |
| What kind of sporangia do Polypodiopsida have? | Leptosporangia |
| Where do most Filicales live? | Temperate regions |
| What is circinate vernation? | Coiled leaves |
| What is sori? | Sporangia in clusters |
| Where do leptosporangia occur on Filicales? | On the underside of fronds or on margins |
| What is an indusium? | Structure that covers sorus starting in the placenta |
| What is a false indusium? | Leaf margin folded over sorus |
| Is the gametophyte of Filicales dependent or independent? | Independent |
| Which are the only living heterosporus ferns? | Marsileceae Salviniaceae |
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