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Which of the following agricultural crops is most likely to survive a catastrophic event? a. mono culture of a crop on a large surface b. diverse varieties of a crop surrounded by a diverse ecosystem c. single crop surrounded by a diverse ecosystem d. diverse varieties of a crop in a simple ecosystem

Short Answer

Expert verified
b. diverse varieties of a crop surrounded by a diverse ecosystem

Step by step solution

01

- Understand the Concept

Recognize that biodiversity in an ecosystem increases the chances of survival during catastrophic events. More diversity generally means better resilience.
02

- Analyze the Options

Review each option: a) A monoculture on a large surface has low diversity and is vulnerable to diseases and pests. b) Diverse varieties of a crop surrounded by a diverse ecosystem has high diversity both in crop types and ecosystem. c) A single crop surrounded by a diverse ecosystem has some diversity, but less than option b. d) Diverse varieties of a crop in a simple ecosystem has some diversity in crops but not in the ecosystem.
03

- Determine the Best Option

Option b is the best choice because it combines the benefits of diverse crop varieties and a diverse ecosystem, providing maximum resilience against catastrophic events.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

biodiversity
Biodiversity refers to the variety of life in a specific habitat or ecosystem. This includes the different species of plants, animals, bacteria, and fungi. The higher the biodiversity, the more resilient an ecosystem is to disturbances such as pests, diseases, and environmental changes.
When an ecosystem has high biodiversity, it is better able to adapt and recover from catastrophic events. Each species plays a unique role within the ecosystem, contributing to functions such as pollination, decomposition, and soil fertility.
In agriculture, maintaining biodiversity can improve crop resilience by providing natural pest control and reducing vulnerability to diseases. Diverse ecosystems support different beneficial insects and microorganisms that help keep pest populations in check and improve soil health.
Make sure to include a variety of crops and plants to promote biodiversity. Rotate crops and use intercropping methods. Avoiding large monocultures is key to fostering a biodiverse and resilient agricultural system.
monoculture
Monoculture is the agricultural practice of growing a single crop species over a large area. While monocultures can be efficient for large-scale farming, they come with several drawbacks, particularly related to resilience.
Monocultures are highly susceptible to pests and diseases. If a disease or pest attacks a single crop species, it can spread quickly and devastate the entire crop.
Soil health in monocultures also tends to decline because the same nutrients are consistently depleted. This can lead to reduced yields over time and increased need for synthetic fertilizers.
To mitigate these issues, farmers should consider diversifying their crops and incorporating practices like crop rotation and polycultures. This approach not only enhances resilience but also promotes healthier soil and sustainable farming practices.
ecosystem diversity
Ecosystem diversity refers to the variety of habitats, communities, and ecological processes within an area. This diversity plays a crucial role in maintaining the balance and health of the environment.
Diverse ecosystems provide various services such as water purification, air quality maintenance, climate regulation, and soil fertility. They also offer habitats for a wide range of organisms, each contributing to the stability and productivity of the ecosystem.
In agriculture, integrating diverse ecosystems can help protect crops through natural pest control and enhanced nutrient cycling. For example, planting hedgerows, cover crops, and maintaining natural areas around fields can increase ecosystem diversity and benefit agricultural productivity.
Farmers can enhance ecosystem diversity by preserving natural habitats, reducing the use of chemical inputs, and implementing ecological farming practices.
agricultural practices
Agricultural practices encompass the techniques and methods used for growing crops and raising livestock. These practices can significantly impact the resilience and sustainability of agricultural systems.
Sustainable agricultural practices include crop rotation, polyculture, agroforestry, organic farming, and integrated pest management. Each of these practices contributes to healthier soils, reduced pest pressures, and more resilient crop systems.
Crop rotation involves alternating the crops grown on a particular field to prevent nutrient depletion and break pest cycles. Polyculture involves growing multiple crop species together to promote biodiversity and improve pest resistance.
Agroforestry integrates trees and shrubs into agricultural landscapes, enhancing ecosystem services like water regulation and habitat provision. Organic farming avoids synthetic inputs, relying instead on natural processes and materials to maintain soil and plant health.
Implementing sustainable agricultural practices not only boosts crop resilience but also supports long-term agricultural productivity and environmental conservation.

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Most popular questions from this chapter

Backpackers returning from a long trip abroad are stopped by customs and asked whether they brought back plants, flowers or fruit from their trip location. Their fruit bought at a local market is confiscated. Why was the fruit confiscated? a. The hikers are supposed to pay duty on imported fruit. b. The fruit can be processed to produce illicit drugs. c. The fruit seed could be planted and could eliminate all local species. d. The fruit may introduce new exotic pests that threaten local plants.

The Convention on International Trade in Endangered Species (CITES) passed a resolution to protect rhinoceroses in the wild. Rhinoceroses have been hunted to the brink of extinction because their horns, which are made of simple keratin, are considered an aphrodisiac and a powerful drug in some cultures. Why does the protection of rhinoceroses require an international agreement? a. The rhinoceroses are hunted in their native countries, but the trade crosses borders. b. The use of rhinoceros’ horns as an aphrodisiac has showed various negative effects internationally. c. The hunters from different countries travel to the native country to hunt for rhinoceroses. d. Their demand is greater in foreign countries as compared to their native countries.

Two genera of birds exist side-by-side on an island. Genus A is characterized by a few species of similar, genetic material. Genus B contains different species of birds with a wide variety of genetic traits. After a volcanic explosion changes the ecosystem, which genus has the highest probability of surviving the disaster? a. Genus A, which contains well adapted species. b. Genus B, which has greater genetic diversity and is more likely to have traits that confer an advantage in the new environment. c. Genus A, which can serve as ancestors for the new species. d. Genus B, because these species likely evolved from Genus A species in the past.

What is a likely reason that small animals survived the cataclysmic impact of a large meteorite that caused the massive extinction at the Cretaceous- Paleocene? a. Small animals stopped being hunted by dinosaurs. b. Small animals do not depend on plants for food. c. Small animals needed less food for survival and reproduce rapidly. d. Small animals fed on the dead dinosaurs.

Predict the consequences of the bee colony collapse disorder in a state such as California, which is a large supplier of produce. a. Only pharmaceutical manufacturing and industries involved in honey production are going to be affected due to this disorder. b. Other pollinators would replace the bees in the ecosystem and there would probably not be a major impact on the production of produce. c. Lack of pollinators would affect the honey industry, but not the fruit harvest industry, because other pollinators are present to carry out pollination. d. The lack of pollinators will affect the fruit harvest directly, and indirectly affect industries linked to it like the honey and jam preparation industries.

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