Ferns and their allies are both vascular plants which means they all contain the xylem & phloem for water and food transport. Discuss two significant developments/ features that evolved among the ferns that differentiate them from the lower vascular plants.
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Ferns and their allies are both vascular plants which means they all contain the xylem & phloem for water and food transport. Discuss two significant developments/ features that evolved among the ferns that differentiate them from the lower vascular plants.
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- A very important feature of ferns is shown: Their shoot xylem is not solid as it was in the rhyniophytes. In the evolution of ferns and seed plants, there was the evolution of pith. A stele with a pith is called a . Another significant feature of ferns is that the phloem occurs both to the outer side as well as the inner side of the xylem. Where does it occur in the vascular bundles of flowering plants?When vascular tissue first forms, the central cylinder of xylem and phloem is called a stele. The stele of vascular plants come in several types depending on how the vascular tissue is arranged. Below is a cross section of a clubmoss (Lycopodium), which is actually an ancestral group of seedless vascular plants and not a true moss. What type of stele do clubmosses have? (You may need to search your Photo Atlas or internet to find the answer). O protostele O siphonostele O eustele O dictyosteleGametophytes develop into gametes and sporophytes develop into spores. True False In mosses and ferns, fertilization, and zygote and embryo formation occur in antheridia. True False Which of the following structures are in an archegonium of a moss? sterile jacket venter neck spermatogenous cells Ferns have roots and vascular tissues but mosses don't. True False
- The non-vascular plants are represented today by three phyla of small herbaceous plants namely: Phylum Hepatophyta, Phylum Anthocerophyta, and Phylum Bryophyta. Cite and explain how the structure fits function in bryophytesOf the following structures, which one can you find in confers and flowering plants, but NOT in ferns? Spores Roots Seeds Vascular tissueIn mosses and ferns, fertilization, and zygote and embryo formation occur in antheridia. True False Sporopollenin makes spores resistant to dry environment and degradation. True False Which of the following structures are in an archegonium of a moss? sterile jacket venter neck spermatogenous cells Ferns have roots and vascular tissues but mosses don't. True False
- The environments in which ferns grow range from standing water to very dry areas. Nonetheless, all ferns are dependent upon free water in order to complete their life cycles. Explain why is the case.Ferns differ from mosses in having: O a. There is no separate gametophyte and sporophyte (each plant changes from sexual to asexual). O b. The gametophyte is dioecious (single sex). Oc. The sperm are transported by wind. O d. Afunction of the roots is to absorb water from the soil. O e. Dispersal is no longer by spores.Briefly describe eusporangia and leptosporangia. Which is the type that occurs in all other vascular plants? Which is the type that occurs in most ferns?
- Explain the life cycle of a fern. Begin with the dominant portion of their life cycle and work your way through the rest including specific names of structures, types of cell division used, and nuclear conditions. Along with your explanation (paragraphs, bulleted points, etc.), I would like for you to discuss in a few sentences how this life cycle is more advanced than a typical moss’s life cycle and, in a few sentences, how it is not quite as advanced as a typical pine’s life cycle.(rather than herbaceous) in that the xylem often displays secondary growth (widening of the trunk). They generally have only tracheids for water conduction and lack vessel elements, which are characteristic of angiosperms. Tyino I. Division: Cycadophyta Although there is only about 100 extant species of cycads, this phylum was significant during the Triassic period (248 million years ago). They are tropical and subtropical plants with trunk-like stems and compound leaves and are popular as ornamentals. These plants are dioecious in that seed cones and pollen cones are on two separate plants. Because of their palm-like structure, they are sometimes incorrectly described as palm trees. However, like other gymnosperms they produce cones and lack flowers. Examples of cycads include False king sago and Florida coontie (Zamia pumila). Zamia pumila is the only cycad native to the United States. ACTIVITY 1: Examine the live plant and/or cones if available. (Use the atlas if necessary.) olsmot…Plant life cycle(s) include Select the correct response: the diplontic cycle only. haplontic, diplontic, and alternation of generations cycles. haplontic and alternation of generations cycles. alternation of generations cycle only. diplontic and alternation of generations cycles.