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problems faced by land plants: water acquisition and conservation gas exchange support conduction sexual reproduction sporic life cycle: in moss, fern, conifer, angiosperm bryophytes Mosses (Bryophyta) Liverworts (Hepatophyta) Hornworts (Anthocerophyta) leptoids hydroids rhizoids cuticle stomata gametophyte sporophyte antheridium archegonium sperm, egg sporangium spore protonema totipotent asexual reproduction foot seta capsule egg, venter, neck gemmae elaters pioneer community seral stages climax community xerosere plant successions biotic abiotic primary succession secondary succession xerosere succession hydrosere succession poikilohydry cryptobiotic soil crusts soil fines humus nitrogen fixation cyanobacteria allelopathy Seedless Vascular Plants Ferns (Pterophyta) Horsetails (Sphenophyta) Whisk Ferns (Psilotophyta) Club Mosses (Lycophyta) vascular tissue transpiration stomata cuticle xylem phloem lignin rhizome strobilus homosporus heterosporous circinate vernation sori gymnosperms the importance of a seed pollen grain Conifers (Coniferophyta) Cycads (Cycadophyta) Ginkgo (Ginkgophyta) Gnetophytes (Gnetophyta) ovule primary growth secondary growth vessels tracheids. deciduous evergreen dioecious monoecious microsporocyte microspore megasporocyte megaspore seed coat (testa) integuments cotyledon radicle plumule coleoptile coleorhiza scutellum hilum tap root system fibrous root system pericarp exocarp mesocarp endocarp simple fruit refer to your notes for the types of simple fruits compound fruit aggregate fruit multiple fruit accessory fruit petiole blade sessile simple leaf compound leaf palmately pinnately parallel venation netted venation node internode totipotent vegetative reproduction refer to your notes for structures involved in vegetative reproduction generative cell tube cell pollen tube polar nuclei endosperm sepal/calyx petal/corolla stamen anther, filament pistil stigma, style, ovary peduncle receptacle complete, incomplete perfect, imperfect monoecious, dioecious regular, irregular A pollen grain is a A. male gametophyte superior, inferior ovary solitary flower, inflorescence pollination fertilization dormancy B. male gamete C. spore stratification scarification seed bank D. very small seed A plant that can dry out, enter a dormant stage, and revive when it is rehydrated is A. allelopathic B. poikilohydric C. impossible In a plant succession, the plants that immediately follow the pioneer community are the A. secondary succession B. seral stage C. climax stage Which cell division process is involved in vegetative reproduction? A. mitosis B. meiosis In some leaves, 3 or 5 major veins depart from a single point. This pattern is A. palmate B. pinnate C. parallel D. compound E. simple A leaf divided into several distinct leaflets that arise from a common point is A. pinnately lobed B. pinnately compound C. palmately lobed D. palmately compound E. palmately complex The function of ANY fruit (fleshy or dry) is A. protection of the developing seed(s) B. seed dispersal D. A and B E. A, B, and C C. food for the young seedling Be able to recognize structures you have seen in sketches, such as parts of a flower and parts of a seed. What is the difference between a primary plant succession and a secondary plant succession? The sequence of events given below summarize the steps in the life cycle of a fern. Indicate above each arrow whether (A) mitosis, (B) meiosis, or (C) fertilization (syngamy) has occurred. spore --------> gametophyte --------> sperm and eggs --------> zygote --------> sporophyte --------> spores In what types of habitats do you find cryptobiotic soil crusts? What are the main types of organisms found in cryptobiotic soil crusts? Name three specific advantages that the crust organisms provide to their ecosystem. How do the organisms provide each of the advantages you gave? Name two divisions of the gymnosperms. Describe two ways in which the plumule can be protected while the seedling is growing underground. In the table below, indicate which generation is dominant (gametophyte or sporophyte), if the plant produces seeds (yes or no), and if free water is required for fertilization (yes or no). plant Which generation is dominant? Does this plant form seeds? Is free water required for fertilization? moss fern conifer angiosperm For plants that do not require free water for fertilization, how do the sperm get to the egg? Some seeds are dormant until stratification takes place. What is stratification? Why is it an important dormancy mechanism? Give one example of each of the following types of fruit: berry = drupe = pome = legume = These questions are based on “The Birds and the Bees” episode of The Private Life of Plants. a. What is the most likely pollinator of a robust flower with red petals and no scent? b. Many orchids don’t offer a nectar reward to their insect pollinators, and their pollen is packaged in a pollinius, not the loose powder released like most flowers (therefore, the pollen isn’t available as a snack). Despite the lack of food available from these orchid, specific bees and wasps are quite willing to visit their orchid of choice. How do these orchids manage to keep the insects’ interest? Distinguish between monocots and dicots for each of the traits listed in the table below. trait leaf venation number of cotyledons type of root system monocots dicots