AEST AGTECH EXAM QUESTIONS AND ANSWERS ALREADY PASSED

AEST AGTECH EXAM QUESTIONS AND ANSWERS ALREADY PASSED What percentage of the people in the United States are farmers? 2 Careers in agriscience include which of the following? processing and recreation and food production By the year 2010, the world population of humans is estimated will be 7 billion What is the meaning of the Greek word bios? life The science involved in the cultivation, propagation, processing and marketing of things like flowers and vegetables is known as horticulture In genetic terms, what is the goal of the process of mapping? to identify the location of a gene on a chromosome Which of the following terms means "life" or "living"? bio Gregor Johann Mendel discovered the effects of genetics on characteristics using which of the following types of plant? pea The pale yellow element occurring widely in nature is sulfur Which of the following is a colorless, radioactive gas formed by the disintegration of radium? radon Chlorofluorocarbons are a group of compounds consisting of which of the following? chlorine, fluorine, carbon, and hydrogen Plants give off oxygen through the process known as: photosynthesis Careers in air quality are available with which service? weather What is the most abundant element in air? nitrogen Insects and other organisms have adapted to the pollution in the air through a process known as: natural selection The greenhouse effect and global warming are: controversial The material that remains after a plant dies or is harvested is called: plant residue The bodies of young plants and animals consist of about 90 percent of which of the following? water A universal solvent serves to: dissolve or change most other materials Which term describes drinking water that is free of harmful chemicals? potable The water cycle is a natural process by which water moves in a circular motion from: oceans to land and back to oceans Which type of water adheres so tightly that plants cannot use it? hygroscopic Which of the following is not an area of focus by the USDA to prevent contamination of groundwater by crop pesticides? management of local water sewage systems The addition of water to plants to supplement the water provided by rain or snow is called: irrigation The attempt to alter the crop environment to prevent or reduce pest damage is known as _____ control. cultural A pest's ability to repopulate after control has been eliminated or reduced is called: pest resurgence It generally takes how long for the release of sterile insects to completely eradicate harmful insects? 2 or 3 years _____ is the union of the pollen and the stigma. Pollination In plant breeding, what is removed