together in tissues. A tissue can be simple or complex depending upon whether it is composed of one or more than one type of cell. Tissues are further arranged or combined into organs that carry out life functions of the organism. Plant organs include the leaf‚ stem‚ root‚ and reproductive structures. The first three are sometimes called the vegetative organs and are the subject of exploration in this chapter. Reproductive organs will be covered in Chapter 5. The relationships of the organs within a plant
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rates in which certain species’ leaves decay and release the energy stored within them can demonstrate how quickly the energy becomes available to organisms in higher trophic levels. Between plant species the rate of decomposition varies according to leaf structure‚ chemical or physical defence and whether the species is allochthonous or autochthonous. Native species adapt to the predators that feed upon them and the same applies for the predators‚ adapting to the plants defences. Allochthonous species
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parts * Netlike array of leaf veins * 3 pores or furrows in pollen grain * Vascular bundles arrayed as a ring in stem * Tap roots * Monocotyledons * One cotyledon * Multiples of three * Parallel array of leaf veins * One pore or furrow in pollen grain * Vascular bundles distributed around tissue of stem * Fibrous roots * Leaf structure * Very thin
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A. Fermentation Lab- The basic process Prepared 3 beakers with contents listed below. ( a. Beaker 1: glucose only b. Beaker 2: Starch only c. Beaker 3: Starch + amylase). Poured contents of each beaker into its respective fermentation tube‚ ensuring the tail portion of the tube was filled with liquid. Placed tubes in an incubator at 37 degrees‚ measuring distance between tip of tube tail to fluid level at 20‚ 40‚ and 60 minute intervals. Calculated gas volume using this distance along with radius
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slides‚ cover slips‚ water‚ glycerine‚ safranine‚ blotting paper‚ needles‚ brush etc. C) Theory :- i) Stomata are minutepore present on the surface of the leaves. ii) Though they are found on both the upper and lower epidermis of the leaf‚ they are more in number on the lower epidermis. iii) Each stoma has two bean shaped cellscalled guard cells surrounded by epidermal cells. iv) Each guard cell hasa nucleus and a number of chloroplasts. The inner wall of the guard
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Transpiration is the evaporation of water from plants. It’s not simply a hazard of plant life but it’s the engine that pulls water from the roots to cool the leaf and supply photosynthesis. The concentration of water vapor in the atmosphere is lower than that in the leaf. Because of this difference‚ water vapor diffuses from the spaces of the leaf‚ through the stomata in the epidermis. Stomata are in the lower epidermis; the lower surface receives less radiation from the sun that’s why it reduces water
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Examination Timetables for 2013 Printed copies of your examination timetable‚ as displayed in myUnisa‚ will be accepted at Examination Venues together with identification documents. To print a copy: 1. Go to your "My Admin" site 2. Click on the link for "Examination Timetable" 3. Ensure that your mouse cursor has identified the correct part of the page (frame) 4. Click on the print function/icon of your Internet browser It is very important that you pay special attention to the dates and times
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Arrangement of Vascular Tissues in Flowering Plants • Xylem and phloem often are grouped together -> vascular bundle • Cambium -> lies in between xylem and phloem -> divide and differentiate -> form new xylem and phloem tissues -> thickening of stem Movement of Substances Into and Within Flowering Plants Entry of Water and Nutrients into Plants • Absorption of water -> root hairs -> grow into close contact with liquid around them • Thin film of liquid surrounding soil
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eventually dying. Water loss via transpiration (loss of water vapour from the aerial parts of a plant due to evaporation) is fundamentally inevitable due to the fact that plants exchange gases with the atmosphere‚ via their stomata-the pores in a leafs epidermis . The bad aspect of this is the fact that the plants must photosynthesise in order to acquire the energy vital for their survival; for this exchange to occur the plant must be able to allow the gases in and out of the leaves‚ and to do this
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Strategy. ABSTRACT Brinjal (Solanum melongena L.) is an important solanaceae vegetable. It is a good source of minerals and vitamins and has medicinal properties. India‚ being a primary center of origin‚ possesses large variability for growth habit; leaf blade lobing; calyx color; fruit shape‚ size‚ and color; and color distribution. The objective of this study was to develop a core set of brinjal germplasm to facilitate access‚ conservation‚ and utilization. Germplasm accessions (1798) were evaluated
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