Table 4.2 Observed cell characteristics of different plant species Plant species Shape of the cll Plastids present Pigments present 1. Allium cepa 2. trichome of Cucurbita maxima 3. Hydrilla verticillate 4. Solanum|melongena L. 6. Capsicum frutescens
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- Describe the orders Malpighiales, Malvales and Give the characteristics based on the characters given in the first column of Table 1. Table 1. Key characteristics of the orders Malpighiales, Malvales and Myrtales. Character Malpighiales Malvales Myrtales 1. Plant habit 2. Plant type (monoecious, or dioecious, etc.) 3. Leaf type 4. Leaf shape 5. Flower characteristic 6. Fruit morphology 7. Seed size/shape 8. Special seed characteristic (if any) 9. Other characteristics (aromatic, etc.)Figure 24.17 Which of the following statements is true? A basidium is the fruiting body of a mushroom-producing fungus, and it forms four basidiocarps. The result of the plasmogamy step is four basidiospores. Karyogamy results directly in the formation of mycelia. A basidiocarp is the fruiting body of a mushroom-producing fungus.As noted in Section 46.7, mycorrhizal fungi help prevent carbon in the soil from escaping into the atmosphere. These fungi also benefit a host plant by providing it with a share of the phosphorus and nitrogen that their hyphae take up from soil. Most crop plants are capable of forming a relationship with mycorrhizal fungi, if any are present in the soil. Some people have suggested that inoculating soil with fungal spores could help reduce the use of industrially produced fertilizer. What are some potential advantages of using fungi, rather than chemical fertilizers, to enhance plant growth?
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- 4. a) EXPLAIN the terms Haplobiontic and Diplobiontic Life Cycle and give ONE example for each b) Anthophytes show "alternation of generation". Identify the structures that represent the TWO stages in its life cycle. c) The diagrams in Figure 2 show the steps in the development of an embryo sac and pollen grain. In ovary megasporangial cell In anther microsporangial cells VI microsporocyte / pollen mother cells (2n) microsporocyte (n) megasporocyte / embryo sac mother cell (2n) 4 megaspores (n) 1 megaspore (..) tube nucleus and VII immature pollen grain antipodal nuclei - polar nuclei synergids egg nucleus .nucleus .nudeus . nudeus (.. VII embryo sac germinating pollen grain FIGURE 2 i) STATE the process that occurs at stages I to IV in the diagrams in Figure 2. ii) What is the chromosome content of the megaspore at III. ii) What are the names of nuclei formed during germination of the pollen grain at VIIIT iv) Identify TWO ways that the sporophyte of a fern differs from that of an…Label the diagram which features an illustration of a portion of the sporophyte of Selaginella with strobili, and a photomicrograph of the longitudinal section of a mature strobilus. Indicate whether each of the structure you identified is haploid (n) or diploid (2n)Describe the orders Lamiales, Solanales, Apiales and Give the characteristics based on the characters given in the first column of Table 1. Table 1. Key characteristics of the orders Lamiales, Solanales, Apiales and Asterales. Character Lamiales Solanales Apiales Asterales 1. Plant habit 2. Plant type (monoecious, or dioecious, etc.) 3. Leaf type 4. Leaf shape 5. Flower characteristic 6. Fruit morphology 7. Seed size/shape 8. Special seed characteristic (if any) 9. Other characteristics (aromatic, etc.)
- All these statements are common between Selaginella and Isoetes Except: Both of them are homosporous O Selaginella have rhizophore but Isoetes have rhizomorph Both of them have roots undergroud Selaginella form strobili but Isoetes have a central cormComplete the following paragraph to describe the characteristics of liverworts and mosses. antheridia protonema rhizoids sexual gemmae roots archegonia fragmentation asexual 1999 binary fission gemmules thalli Reset Help Liverworts and mosses are examples of nonvascular plants. Liverworts such as Marchantia have a smooth upper surface, and a lower surface with that project into the soil. The smooth upper surface of the thallus of a liverwort contains groups of cells called cups that can produce new plant organisms asexually. During sexual reproduction in liverworts, flagellated sperm are produced by and eggs are produced by After fertilization, small sporophytes produce windblown spores. Typically, mosses can reproduce asexually by almost every part of the moss plant to produce During the life cycle of a moss, a its structure. This process allows will produce upright leafy thalli along The thalli of a moss produce antheridia and archegonia, which are involved in reproduction.Compare and contrast the three phyla of bryophytes using the specified bases in the Table below. Bases Hepatophyta Anthocerotophyta Bryophyta 1. Growth form (leafy or thallose) 2. Arrangement of leaves on the stem for leafy types 3. Mechanism of spore dispersal 4. Presence of stomata on the sporophytes 5. Presence of primitive conducting cells 6. Presence of chloroplast on the sporophyte 7. Structure of the protonema 8. Presence of symbiotic cyanobacteria 9. Length of the seta