Chapter 20 Online Study Guide

1. Read page 502. A typical acre of meadow or woods contains an estimated 50,000 to _________________ spiders.

100, 000

250,000

500,000

2 million

The correct answer is 2 million. According to the information on page 502, a typical acre of meadow or woods contains an estimated 50,000 to 2 million spiders.

Explanation

The correct answer is 2 million. According to the information on page 502, a typical acre of meadow or woods contains an estimated 50,000 to 2 million spiders.

2. Looking at second generation pescticides. IN the Un ited States we make approximately __________ different pesticide products. About 25% of pesticide use in the United States is for ridding houses, gardens, lawns, parks, playinf fields, simming pools and golf courses of pests. Your lawn is most likely doused with 10 times more synthetic pesticides than US cropland!! Ask your parents if they ever use pesticides and if they are synthetic or natural.

10,000

25,000

5,000

15,000

The correct answer is 25,000. This is because the passage states that approximately 25% of pesticide use in the United States is for ridding houses, gardens, lawns, parks, playing fields, swimming pools, and golf courses of pests. It also mentions that your lawn is most likely doused with 10 times more synthetic pesticides than US cropland. Therefore, considering the high demand for pesticide products in these areas, it is reasonable to assume that there are approximately 25,000 different pesticide products made in the United States.

Explanation

The correct answer is 25,000. This is because the passage states that approximately 25% of pesticide use in the United States is for ridding houses, gardens, lawns, parks, playing fields, swimming pools, and golf courses of pests. It also mentions that your lawn is most likely doused with 10 times more synthetic pesticides than US cropland. Therefore, considering the high demand for pesticide products in these areas, it is reasonable to assume that there are approximately 25,000 different pesticide products made in the United States.

3. In many insect species, a female that is ready to mate releases a minute amount (typically about one-millionth of a gram) of a chemical sex attractant called a __________.

Juvenile hormone

Moltine hormone

Pheromone

Cytochrome

In many insect species, females that are ready to mate release a minute amount of a chemical sex attractant called a pheromone. Pheromones are substances secreted by animals that influence the behavior or physiology of other members of the same species. In this case, the female releases the pheromone to attract males for mating. Pheromones play a crucial role in insect communication and reproductive behavior.

Explanation

In many insect species, females that are ready to mate release a minute amount of a chemical sex attractant called a pheromone. Pheromones are substances secreted by animals that influence the behavior or physiology of other members of the same species. In this case, the female releases the pheromone to attract males for mating. Pheromones play a crucial role in insect communication and reproductive behavior.

4. According to the USDA and the U.S. Fish and Wildlife Service, each year in the United State Pesticieds applied to copland Kill more than ________________ birds.

5 million

67 million

500,000

25 million

According to the USDA and the U.S. Fish and Wildlife Service, the use of pesticides on cropland in the United States results in the death of approximately 67 million birds each year.

Explanation

According to the USDA and the U.S. Fish and Wildlife Service, the use of pesticides on cropland in the United States results in the death of approximately 67 million birds each year.

5. Which of the following is NOT a First Generation pesticide?

Pyrethrum

Rotenone

Nicotine

Nematocides

Nematocides are not considered first-generation pesticides because they specifically target and control nematodes, which are microscopic worms that can cause damage to plants. First-generation pesticides, on the other hand, typically refer to the older, broad-spectrum chemicals that were developed and used in the early days of pesticide use. Pyrethrum, rotenone, and nicotine are examples of first-generation pesticides that were commonly used before more modern and targeted pesticides were developed.

Explanation

Nematocides are not considered first-generation pesticides because they specifically target and control nematodes, which are microscopic worms that can cause damage to plants. First-generation pesticides, on the other hand, typically refer to the older, broad-spectrum chemicals that were developed and used in the early days of pesticide use. Pyrethrum, rotenone, and nicotine are examples of first-generation pesticides that were commonly used before more modern and targeted pesticides were developed.

6. There are a lot of good reasons to use pesticides, and your book mentions several. Saving human lives is one of the most important. What small insect transmits bubonic plague and typhus?

Flea

Tsetse fly

Lice

Mosquitoes

The correct answer is flea because fleas are known to transmit bubonic plague and typhus. These diseases are caused by bacteria that are carried by fleas and transmitted to humans through their bites. Fleas are particularly dangerous because they can spread diseases rapidly, making them a significant threat to human health. Therefore, using pesticides to control flea populations is crucial in preventing the transmission of these deadly diseases.

Explanation

The correct answer is flea because fleas are known to transmit bubonic plague and typhus. These diseases are caused by bacteria that are carried by fleas and transmitted to humans through their bites. Fleas are particularly dangerous because they can spread diseases rapidly, making them a significant threat to human health. Therefore, using pesticides to control flea populations is crucial in preventing the transmission of these deadly diseases.

7. Read the section entitled How can Pesticides Threaten Human Health. This may be some of the most interesting information in the chapter, and may help you make decisions that may help keep your family healthier. Children whose yards were treated with pesticides (mostly herbicides - weed killers) were ___ times more likely to suffer from cancers of muscle and connective tissues than children whose yards were not treated. do you use herbicides in your yard?

2

4

8

10

not-available-via-ai

Explanation

not-available-via-ai

8. The United States is far behind many countries in Pest Management. Indonesia for example, in 1986 banned the use of 57 of the 66 pesticiedes used on rice, and phased out pesticided subsidies (subsidies = government giving money to folks using the pesticides). The results are incredible. Pesticide use dropped by ____% rice production rose by 15% and more than 250,000 farmers were trained in IPM techniques. Know IPM!

33

47

65

75

In 1986, Indonesia banned the use of 57 out of 66 pesticides used on rice, and also phased out pesticide subsidies. As a result, pesticide use dropped by 65%, rice production rose by 15%, and over 250,000 farmers were trained in Integrated Pest Management (IPM) techniques. This demonstrates that by implementing stricter regulations and promoting sustainable practices like IPM, a significant reduction in pesticide use can be achieved, leading to increased crop production and improved training for farmers.

Explanation

In 1986, Indonesia banned the use of 57 out of 66 pesticides used on rice, and also phased out pesticide subsidies. As a result, pesticide use dropped by 65%, rice production rose by 15%, and over 250,000 farmers were trained in Integrated Pest Management (IPM) techniques. This demonstrates that by implementing stricter regulations and promoting sustainable practices like IPM, a significant reduction in pesticide use can be achieved, leading to increased crop production and improved training for farmers.

9. Which of the following is NOT an example of a biological control?

Virus to control Rabbits in Australia

Crop-duster planes releaseing parasitic wasps instead of psticiedes to fight the cassava mealybug

Introduction of the vedalia beetle to eliinate cottonly-cushion scale from citrus orcahrds in the U.S.

The introduction of nitrogen fixing bacteria from the U.S to Mexico.

The introduction of nitrogen fixing bacteria from the U.S to Mexico is not an example of biological control because it involves the introduction of a beneficial organism to enhance soil fertility and plant growth, rather than to control a pest or invasive species. Biological control typically involves the use of natural enemies, such as viruses, parasitic wasps, or predatory insects, to regulate the population of a target organism.

Explanation

The introduction of nitrogen fixing bacteria from the U.S to Mexico is not an example of biological control because it involves the introduction of a beneficial organism to enhance soil fertility and plant growth, rather than to control a pest or invasive species. Biological control typically involves the use of natural enemies, such as viruses, parasitic wasps, or predatory insects, to regulate the population of a target organism.