Seed Germination‚ Dormancy‚ and Storage 1 _________________ I. INTRODUCTION Seeds role in the germination process is a critical part in the plant ’s survival. This is practically true in almost all of the plants species (Copeland & McDonald‚ 1995). As germination is defined as "the emergence and development from the seed embryo of those essential structure"‚ which‚ for the kind of seed in question indicates "its ability to produce a normal plant under favorable
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the type of plant‚ and whether they are monocot or dicot. Leaf structure is used to uniquely identify plants. Leaves can be netted or branched‚ or they can show parallel venation. Stem structure is also important in identifying plants. Dicots‚ monocots‚ ferns‚ and gymnosperms can all be identified by their stem structure. If a tree or shrub loses its leaves in the cold months of the year‚ it is considered deciduous and then can also be classified as a dicot (http://en.wikipedia.org/wiki/Plant_stem)
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questions below using the picture of the Gladiolus‚ or Lily flower‚ below. 1. How many petals does this flower have? 6 2. How many stamens does this flower have? 5 3. How many stigmas does this flower have? 1 4. Is this the flower of a monocot or a dicot? Monocot 5. Explain your answer for question #4. This flower has petals multiple of 3. The petals also seem to have parallel veins. 6. Is this flower perfect or imperfect? Perfect 7. Look at the image of the lily ovary below. How many locules
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bundle may be made up of both xylem tissue and phloem tissue with a cambium as in dicot stems or without cambium as in Monocot stems or of one kind of tissue xylem or phloem as in roots. Vascular bundle may be regularly arranged in a ring as in the stems of most dicotyledons and in all roots or they may be scattered in the ground tissue as in stems of Monocotyledons. Elements of Vascular Bundle Vascular bundle of Dicot stem when fully formed consists of there well defined tissues (1) Xylem or wood
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20.1 KEY CONCEPT-Plant life began in the water and became adapted to land. Plants are multicellular eukaryotes‚ most of which produce their own food through photosynthesis and have adapted to life on land. Plants share many characteristics with green algae. Both are photosynthetic eukaryotes with the same types of chlorophyll. Both also use starch as a storage product and have cell walls that contain cellulose. One ancient species of green algae is the common ancestor of all plants. If it were
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germination: * proper temperature * the presence of adequate water * oxygen There are two types of cotyledons: the monocotyledons (“monocots”) and the dicotyledons (“dicots”). Monocots have one cotyledon. Rice and corn are monocots. Dicots have two cotyledons. Lentils‚ lima beans‚ and green beans are dicots.* Germination in Dicots 1. The bean seed is a dicotyledonous and non-endospermic seed.When soaked in water ‚the seed swells up‚the seed coat is softened and then it bursts.
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Energy Budget of plants: Plants are the source of energy for all of us and all living things on earth. Energy is the currency of the universe = $ (work) * Energy budget= must be balanced Energy budget * Plants collect and process energy * Basic source SUN * Diffuse – need to collect a lot to get fixed energy * (sugar)- LEAVES = solar collector * Everything must be paid for and pay for itself over time Plants are sentient beings * Perceive environment and
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regeneration and wound response. 4) Adventitious roots on stem cuttings 5) Secretion 6) Storage 7) Photosynthesis c. Collenchyma 1) Living at maturity 2) Associated with epidermis of stems and petioles and bordering veins in dicot leaves (strings on celery) 3) Typically elongated cells with unevenly thickened cell walls. 4) Function in support. d. Sclerenchyma 1) Fibers are long slender non living support cells occurring in strands or bundles. Hemp‚ jute and flax
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Background point 1: There are several conditions that affect the germination of seeds. Most factors are external but there are also some internal conditions that affect the germination of seeds‚ even though this is quite rare. The most common and the most important external conditions and factors that affect the germination of seeds are oxygen‚ water‚ temperature and also in some cases light or darkness. Some plants require several variables for successful seed germination. As this is quite rare
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Unit 1 Diversity 1. List the 6 kingdoms for classifying living things. 2. List the levels of organisation from kingdom to species. 3. What is binomial nomenclature? 4. Who is Carl Linnaeus? 5. What is a dichotomous key? 6. Draw and label the lifecycle of a DNA virus. 7. Distinguish between DNA and RNA viruses. 8. Compare eukaryotic cells and prokaryotic cells. 9. Define coccus‚ bacillus‚ streptococcus‚ and spirillum? 10. What are 3 examples of helpful bacteria? 11. What do bacteria need
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