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Death of a Salesman Week 1
Quiz by Erica Lacy
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Death of a salesmanThe Death of a SalesmanAnalysing 'Death of a Naturalist' by Seamus HeaneyUnderstanding 'Death of a Naturalist' by Seamus HeaneySTD: XI The Death of a NaturalistRetirement and death of a partnerrefreshment (n): (small amounts of food and drink ( Refreshments will be available during the interval.) stimulant (n): a substance which temporarily arouses physiological or organic activity ( Caffeine is a natural stimulant .) reinforcement (n): the act of making sth stronger / (plural) soldiers sent to join an army to make it stronger ( Constructors have been hired to add reinforcement to the foundations of the old bridge.) initiative (n): the ability to make decisions without waiting to be told what to do (Being a successful entrepreneur requires one to have great initiative.) inhibition (n): a shy or nervous feeling that stops you from expressing your real feelings (She drinks alcohol at parties to get over her inhibitions.) initiation (n): a ceremony, ritual, test, or period of instruction with which a new member is admitted to an organization or office (The initiation period for new employees lasts approximately six weeks.) initial (n): the first letter of a name, esp. when used to represent a name (Do you know what Ms Rowling's initials, J and K, stand for?) concise (adj): short and clear, expressing what needs to be said without unnecessary words (She gave a concise overview of the points she was about to make in her speech. ) direct (adj): happening or done without involving other people, actions, etc. in between ( You will only be hired if you have direct experience in this field.) devious (adj): not straightforward, sincere and honest about your intentions or motives; shifty (They came up with a devious plan to overthrow the chairman of the company.) circuitous (adj): not straight or direct (The professor gave a circuitous explanation confusing his students.) diluted (adj): (of a liquid) made weaker or less pure by being mixed with sth else( Orange squash should be diluted with water before it is served.) delicate (adj): easily hurt or destroyed.( This silk shirt is too delicate to put in the washing machine.) desolate (adj): extremely sad and feeling lonely. (After the death of his wife he led a desolate life.) diffused (adj): widely spread or scattered; not concentrated/ wordy ( He spoke in such a diffused manner that it was impossible to take notes on his lecture.) might (n): the power, force, or influence held by a person or group (The captive struggled with all of his might and managed to free himself of the chains.) plot (n): a secret plan made by several people to do sth that is wrong, harmful or not legal, esp. to do damage to a person or a government / a storyline ( The plot of the forthcoming Harry Potter book has yet to be revealed.) glaze (n): a thin clear liquid put on objects before they are finished, to give them a shiny surface ( She mixed sugar and lemon to make the glaze of the cake.) plight (n): an unpleasant condition, esp. serious, sad or difficult one ( Last night's documentary dealt with the plight of political asylum seekers.) comprise (v): to consist of be composed of( The final exam is comprised of three parts.)A symbiosis (SIM-bie-OH-sis) is a close, long-term relationship between two organisms. Three examples of symbiotic relation- ships include: parasitism, mutualism, and commensalism. Parasitism (PAR-uh-SIET-IZ-UHM) is a relationship in which one indi- vidual is harmed while the other individual benefits. Mutualism (MYOO-choo-uhl-IZ-uhm) is a relationship in which both organisms derive some benefit. In commensalism (kuh-MEN-suhl-IZ-uhm), one organism benefits, but the other organism is neither helped nor harmed. Parasitism Parasitism is similar to predation in that one organism, called the host, is harmed and the other organism, called the parasite, benefits. However, unlike many forms of predation, parasitism usually does not result in the immediate death of the host. Generally, the parasite feeds on the host for a long time rather than kills it. Parasites such as aphids, lice, leeches, fleas, ticks, and mosquitoes that remain on the outside of their host are called ectoparasites. Parasites that live inside the host’s body are called endoparasites. Familiar endoparasites are heart- worms, disease-causing protists, and tapeworms, such as the one shown in Figure 20-5. Natural selection favors adaptations that allow a parasite to exploit its host efficiently. Parasites are usually specialized anatomically and physiologically for a par- asitic lifestyle. Parasites can have a strong negative impact on the health and reproduction of the host. Consequently, hosts have evolved a variety of defenses against parasites. Skin is an important defense that prevents most parasites from entering the body. Tears, saliva, and mucus defend openings through which parasites could pass, such as the eyes, mouth, and nose. Finally, the cells of the immune system may attack para- sites that get past these defenses. parasite from the Latin word parasitus, meaning “one who eats at the table of another” Word Roots and Origins Tapeworms are endoparasites that can grow to 20 m or greater in length. Tapeworms are so specialized for a parasitic lifestyle that they do not have a digestive system. They live in the host’s small intestine and absorb nutrients directly through their skin. Tapeworms reproduce by producing egg-filled chambers, which are released in their host’s feces to be unknowingly picked up by a future host. FIGURE 20-5 Copyright © by Holt, Rinehart and Winston. All rights reserved. 404 CHAPTER 20 Mutualism Mutualism is a relationship in which two species derive some benefit from each other. Some mutualistic relation- ships are so close that neither species can survive without the other. An example of mutualism, shown in Figure 20-6, involves ants and some species of Acacia plants. The ants nest inside the acacia’s large thorns and receive food from the acacia. In turn, the ants protect the acacia from herbi- vores and cut back competing vegetation. Pollination is one of the most important mutualistic rela- tionships on Earth. Animals such as bees, butterflies, flies, beetles, bats, and birds that carry pollen between flowering plants are called pollinators. A flower is a lure for pollina- tors, which are attracted by the flower’s color, pattern, shape, or scent. The plant usually provides food—in the form of nectar or pollen—for its pollinators. As a pollinator feeds in a flower, it picks up a load of pollen, which it may then carry to other flowers of the same species. Commensalism Commensalism is an interaction in which one species benefits and the other species is not affected. Species that scavenge for leftover food items are often considered commensal species. However, a relationship that appears to be commensalism may simply be mutu- alism in which the mutual benefits are not apparent. An example of a commensal relationship is the relationship between cattle egrets and Cape buffaloes in Tanzania. The birds feed on small animals such as insects and lizards that are forced out of their hiding places by the movement of the buffaloes through the grass. Occasionally, the cattle egrets also feed on ectoparasites from the hide of the buffaloes, but the buffaloes gen- erally do not benefit from the presence of the egrets.