With reference to arabdopsis and maize describe how the morphological similarities and differences between eudicot and monocot embryos dictate their partterns of development
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With reference to arabdopsis and maize describe how the morphological similarities and differences between eudicot and
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- Explain the sequence of events in a flowering plant that begins with formation of a pollen tube and culminates with the formation of a diploid zygote and the 3n cell that will give rise to endosperm in a seed.Discuss some ways in which fruit seeds are dispersed.Below is a series of pictures of a eudicot stem tip (I.s.), Coleus sp.. Much of what plant biologists have learned about leaf development have occurred by studying stem tip genetics. 40x (I.s.) Make a sketch of the 40x stem longitudinal section and upload it here with the following structures labeled: apical meristem, leaf primordium, axillary bud, procambium, vascular tissue (need to look lower down the stem for these sub-tissues), ground meristem, cortex, pith
- Compare and contrast the germination of a typical monocot and eudicot seed by addressing the following:a. Explain the anatomy of a monocot and eudicot seed by naming and defining their various parts.The embryo of monocotyledonous seed consists of one large, shield shaped cotyledon. What is it known as?Part B: The Embryo Sac Examine the demonstration slide of a c.s. of a lily ovary. Find an ovule. Identify the funiculus, the chalaza, the integuments, the micropyle, and the developing female gametophyte. The latter is commonly referred to as the embryo sac in angiosperms. If your slide has several embryo sacs, they are likely to be at variable stages of development. (See text Figure 19-18b,c, page 469.) Like the female gametophyte in pine, the embryo sac develops from a megaspore. 5. Label the ovary wall, ovule, integuments, and developing embryo sac in Figures 3. and 4. below. Figure 3. Lilium ovary c.s. Photo by Carolyn Alling 126 uilid Sengit olybiolq sdh ei todW A Figure 4. Lilium ovule c.s. (Enlargement of inset of Figure 3)
- Compare and contrast the characteristics of a somatic embryo and a shoot grown directly from a leaf explant. Explain the differences between somatic and androgenic embryos.Examine the different kinds of buds, are these structure arepresent in all plants, what is a stipule and how can you differentiate a stipule from an axilliary bud.Lilium Ovary Describe the function of each structure (Central column, ovule, funiculus, septum, pericarp, and locule) Compare the lily ovary to the pistillate strobilus of a gymnosperm
- Examine the shoot system of a mature plant (Coleus blumei). Identify the shoot tip, nodes, internodes, leaves, and axillary buds. Each unit of stem that consists of a leaf, axillary bud and internode is referred to as a phytomere. Note that axillary buds always occur above a leaf. Axillary buds give rise to branch shoots. Thus, branching in a shoot system is exogenous (of external origin). How does this compare to branching in a root system?Discuss the leaf epinastic movement of monggo (Vigna radiata) seeds within five days of seed germination.from the fruit of wild daisy, there are hair like structures, what do these structures represent in the flower from which the fruit was derived?
