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- NEW SET
- A
- We need food and we must be able to depend, year after year, upon
- adequate food and fiber that only stable crop production can supply. Many
- countries have neither an adequate nor a stable agricultural production
- system - malnutrition and a host of other health-related problems result.
- Stable production of agricultural products depends upon many things, but
- plant protection from losses caused by pests is a very critical one.
- next
- 1
- 1. The author is arguing for the need for
-
- A. adequate food
- B. stable crop production
- C. plant protection
- D. sharing of food among nations
- E. pest management
- next
- e
- 0
- B
- Correct.
- next
- wrong answer explanation
- B
- (E) He is arguing for pest control.
- NEXT
- NEW SET
- B
- Pest numbers are legion and may take many forms. Man has always
- sought means to cope with pest-induced problems. These operations involve
- protecting man's health, comfort, esthetic values, and freedom from
- annoyance, but certainly protecting domestic animals, crops, forests, and
- other property is one of the most important.
- Insect problems are not unique to modern civilization. Graphic
- accounts of insect attack are found in literature of the ancient Hebrew,
- Egyptian, and Greek civilizations.
- next
- 1
- 1. The author cites all of the following as reasons for pest management
- EXCEPT protecting
-
- A. individuals' freedoms
- B. domestic animals
- C. crops
- D. property
- next
- a
- 0
- C
- Correct.
- next
- wrong answer explanation
- C
- (A) Pest control is not needed to protect individuals' freedoms.
- NEXT
- NEW SET
- C
- Early attempts to cope with pest problems were largely ineffective,
- at best feeble, and man was forced to share his abode, body, and food
- supply. Concentrated efforts to control a variety of organisms largely
- began with the development of agriculture, more or less 10,000 years ago,
- and permanent settlements. Early efforts were poor, some dealing with
- mysticism, but gradually a few chemicals were discovered, sulfur, for
- example, with moderate to good effectiveness on certain pests.
- next
- 1
- 1. Efforts to control pests began with
-
- A. permanent settlements
- B. mysticism
- C. the development of agriculture
- D. A and B
- E. A and C
- next
- e
- 0
- D
- Correct.
- next
- wrong answer explanation
- D
- (E) Permanent settlements and agriculture both led to pest control efforts.
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- NEW SET
- D
- In the mid-1940's, the first synthetic organic pesticides began to
- appear, and opened a new era in pest control. Insecticides, more than
- other pesticides, were applied repeatedly, often with little thought or
- information on whether the application was really necessary. Gradually
- problems began to evolve from such heavy dependence upon insecticides.
- The potential hazards from repeated use cause serious social concerns
- about effects on human health and the environment.
- next
- 1
- 1. The author cites the mid-1940's as
-
- A. a time of concern about human health
- B. a time of concern about the environment
- C. a time of development of new pesticides
- D. A and B
- E. A and C
- next
- c
- 0
- E
- Correct.
- next
- wrong answer explanation
- E
- (C) This was an era of new pesticide development.
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- NEW SET
- E
- The general lack of selectivity of insecticides between pest and
- beneficial species created problems. Beneficial insects - parasites and
- predators - along with insect disease, provide a large degree of natural
- control of many pest species. Removal of such desirable organisms often
- resulted in secondary pest problems developing, and in primary pest
- populations quickly rebuilding to damaging levels. Thus, more insecticide
- was needed and sometimes a treadmill of treatment resulted.
- next
- 1
- 1. The author states that insecticides
-
- A. provide a large degree of natural control
- B. create new problems
- C. result in higher primary pest populations
- D. result in increased insect disease
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- b
- 0
- F
- Correct.
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- wrong answer explanation
- F
- (B) Insecticides can cause new problems.
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- NEW SET
- F
- Other tactics are needed and, in fact, some old and newly developed
- tactics are available and being used in field practice. Integrated pest
- management was the term given the developing management systems. This
- is simply a program, recognizing the complex biological nature of
- agricultural crops, in which all techniques of managing pests are
- integrated into a systems approach so each control method or tactic used
- complements the other.
- next
- 1
- 1. The author argues for
-
- A. abandoning chemical pesticides
- B. integrated pest management
- C. using predators to control pest populations
- D. using chemical insecticides
- next
- b
- 0
- G
- Correct.
- next
- wrong answer explanation
- G
- (B) The author suggests that various means be integrated for maximum success.
- end