WebDescribe the two main types of vascular tissue found in vascular plants. Describe the structure of seeds and the requirements for germination. Describe the structure flowers, including male and female parts. Differentiate between pollination and fertilisation. Describe the characteristics of angiosperms, gymnosperms, pteridophytes and bryophytes. 1. Pteridophytes are considered as the first plants to be evolved on land: It is speculated that life began in the oceans, and through millions of years of evolution, life slowly adapted on to dry land. And among the first of the plants to truly live on land were the Pteridophytes. 2. They are cryptogams, … See more Pteridophytes show alternation of generations. Their life cycle is similar to seed-bearing plants, however, the pteridophytes differ from mosses and seed plants as both … See more Following are the important examples of Pteridophyta: 1. Whisk Fern 2. Dicksonia 3. Selaginella 4. Lycopodium 5. Equisetum 6. Pteris 7. Dryopteris 8. Adiantum 9. Man fern 10. Silver fern See more
Plant Kingdom: Classification, Characteristics, …
WebBryophytes are spore-producing plants that do not have a vascular tissue. They reproduce through gametes and hence have earned the name gametophytes. The sex organs of bryophytes are multicellular. … WebPteridophytes grow as herbs, trees, epiphytes, and floating plants, inhabiting both terrestrial and freshwater environments. Many examples of common pteridophytes … opting out of 48 hour working week
Phylum Pteridophyta: Characteristics, Classification
WebThese plants are mostly small, herbaceous and grow well in moist, cool and shady places where water is available. The photographs for some pteridophytes are given in Figure 2.24. 1. General characteristic … WebThe following points highlight the three classes of Pteridophytes. The classes are: 1. Psilopsida 2. Lycopsida 3. Sphenopsida. Pteridophytes: Class # 1. Psilopsida (Psilophytes): They are the most primitive vascular plants. Roots are absent. Instead rhizoids occur. Stem is dichotomously branched. It has two parts, aerial and rhizomatous. WebThe leaves are generally small, although they sometimes achieved a length of one metre (three feet) in the gigantic Lepidodendron. Generally, each leaf, or microphyll, is narrow and has an unbranched midvein, in … portland texas vet