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Wigs and hairs - Seed Appendages
Seeds of certain plants have epidermal outgrowths or the integuments themselves may form folds and projections that present a wing-like appearance. In the tree Oroxylon sp. a thin, transparently white, circular or oval, disc-like wing spreads all around the two-lobed seed. The seed of cucurbit Zanonia macrocarpa has wings measuring up to 10 cm.
In the drumstick plant Moringa oleifera the seed has three equidistant wings. Seed wings provide large surface area, with optimum strength, combined with a minimum of material. A surprisingly large number of winged seeds can be arranged compactly in a fruit. Wings help the seed to propel, sail or spin some distance away when released from the fruit.
How Thirst and satiety influence water intake? Thirst and satiety influence water intake, apparently in response to changes sensed by the mouth, hypothalamus and nerves. When t
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The plasmids below show the insertion of the EZH2 gene into the pBluescript plasmid in either sense (forward) or antisense (reverse) orientation. These are the plasmids you will ho
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Explain the Structure of Fungi? The vegetative structure of a fungus is called thallus. It varies in complexity and size, ranging from unicellular yeasts to multicellular mould
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Explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid (pyruvate) into lactic acid, even though the conversion results in an accumulation
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