axes in a vascular plant. Fluids are transported between the roots and the shoots through the stem by the phloem and xylem. Leaves are the main photosynthetic organ of vascular plants. They have a fattened blade‚ a stalk and a petiole. They have the chloroplast (with chlorophyll) and the gas exchange takes place here. 2.) Intra-organism communication is possible through the xylem and the phloem. The transpiratinal pull is due to cohesion and adhesion. Evaporative cooling will result. A plant’s defense
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|Thesis Summary | | | | | |
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The human circulatory system includes the heart‚ blood vessels‚ and the blood. The circulatory system in humans is also known as the cardiovascular system. The main parts of the plant circulatory system are xylem and phloem. Humans and plants rely on their circulatory system a great deal. Plants and humans rely on their circulatory system to supply the body or plant with nutrients‚ humans to transport oxygen throughout the body‚ and plants to carry carbon dioxide throughout the body. The circulatory
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Parasitic Nutrition 21 May 2011 10:43 = organisms that live on or in another organism obtaining nourishment at the expense of the host and causing harm. Gut parasite (Taenia solium) = tapeworm Primary host = human (eat uncooked infected pork) Secondary host = pig (drainage channels contaminated by human faeces) Adaptations… - Suckers & hookers (attachment) - Body covering (immune responses) - Thick cuticle (inhibitory substances = enzymes) - Simple body systems (reproduction) - Very thin & large
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B X Which section X or Y comes from the root ? ……………………....................part X Label parts A-B on section X: A: Xylem B: phloem Which parts of on section Y correspond to parts A and B on diagram X/ Inner part(shaded black) xylem vessels. Outer part(white)
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Biology- Maintaining a Balance Summary 1. Most organisms are active in a limited temperature range 1. identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates Enzymes are proteins which act as catalysts in living things (they lower the amount of energy needed for a reaction‚ therefore increasing rate of reaction). Enzymes speed up reactions but are not used up by them. Enzymes catalyze only one
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These two structures do of course differ‚ because the vascular plants are much further evolved than the Algae. A few of these likely acquired traits are Xylem‚ and Phloem‚ which transport both water and food throughout the plant much like the veins in our body transport oxygen through veins and arteries‚ though Xylem unlike Phloem use passive transport to accomplish this. The cuticle‚ or waxy covering of the vascular plants‚ allowing them to survive perhaps better‚ especially when supplied with
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Also present in the dermal layer of the leaves are stomata‚ which are tiny openings that allow carbon dioxide to enter and complete the Calvin Cycle of photosynthesis. The innermost layer of the plant is called the vascular tissue and is composed of phloem and xylem‚ which transport nutrients and water to the rest of the plant. The last layer is the intermediate layer‚ which is called the ground tissue. The ground tissue in leaves is the mesophyll layer that contains the photosynthetic cells. All plants
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the upper epidermis‚ which provide protection and prevents water loss. Below is the palisade mesophyll layer‚ composed of long column-like chloroplast cells which absorbs light to be used in photosynthesis. Xylem carries water and minerals‚ while phloem carries starches and nutrients to wherever needed; these two comprise the vascular bundle. Underneath is the spongy mesophyll layer‚ which is porous to allow for gas exchange‚ of carbon dioxide
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http://www.unaab.edu.ng COURSE CODE: COURSE TITLE: NUMBER OF UNITS: COURSE DURATION: PCP 504 PLANT GROWTH AND DEVELOPMENT 3 UNITS 3 HOURS PER WEEK COURSE DETAILS: COURSE DETAILS: Course Coordinator: Email: Office Location: Other Lecturers: DR A.O.OLAIYA olaiyaao@unaab.edu.ng Room 131‚ COLPLANT Prof V.I.O OLOWE‚ Prof P.O.ADETILOYE‚ DR M.O.ATAYESE‚ DR O.S SAKARIYAWO COURSE CONTENT: Seed germination and dormancy. Juvenility and senescence. Translocation and respiration in crops‚ role
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