Chapter 10 Exam Study

__________ comprises just over half of all of the worlds GM crops

Soybeans

All of the following factors are thought to contribute to colony collapse disorder except ______.

abnormally harsh winters

In order for livestock to be considered organic, ________.

animals must be fed 100% organic agricultural feed

Major pollinators of many flowering non-grain crop plants

bees

During the past half century, global food production has ________ world population growth.

grown at a faster rate than

Globally, approximately how many people are undernourished?

1 billion

Approximately ______% of the food we consume comes from _____ crop species

90;15

It is more energetically efficient for us to eat more ________.

plant based foods

Can protect crops from insect pest related losses when applied periodically

Bacillus thuringiensis

A successful case of biological control, introduced from Argentina to Australia in the 1920s to control invasive prickly pear cactus

Cactoblastis cactorum

If GM crops can decrease pesticide use, why are environmentalists still concerned about them?

Inserted genes can spread to nontarget species

Why did the Indonesian government support IPM for agriculture in 1986?

Pesticides were costing money, causing pollution, and decreasing yields

Why have most bioengineered crops been modified for "resistance" traits?

These traits have the economic potential to save on production costs

Which of the following statements best describes GM crops?

They are developed by using bacteria

Why do soybeans, corn, cotton, and canola dominate the GM crop market?

They are ingredients in processed foods, so they are more easily accepted

Aquaculture __________.

can bring economic benefits and food security to many developing regions

Managing crop competitors and pests has been challenging to agronomists for centuries. One approach, integrated pest management, ________.

combines synthetic chemical pesticides with biocontrol techniques

Of all the kinds of livestock, these animals require the most land and water to produce 1 kg of protein

cows

European nations ______.

do not support the growth or sale of GM crops

The average consumer can reduce his or her ecological footprint by ______.

eating less meat and dairy products

In Queensland, Australia, cactus moths ______.

effectively cleared non-native prickly pear cactus from rangeland

Organic farming ________.

has become more challenging because of contamination by GM crop varieties

Green Revolution techniques

have increased crop yields but may not be sustainable

Normal Borlaug, who passed away in 2009, pioneered the development of ________.

high yield wheat

Which of the following is permissible for use on certified organic crops

manure

More than one in three adults in the US is _____.

obese

Neonicotinoids are used ______.

on seeds to protect the plants from insects after the seeds germinate

For most Americans, factory farms and feedlots are their source for the produce shown in the figure. All of the following are negative impacts from factory farms and feedlots except

overgrazing

Introduced for control of agricultural pests in Hawaii

parasitoid wasps

Seed banks are important for ________.

protecting genetic diversity

The first genetically modified animal approved for sale as food in the US

salmon

Cows require a high quantity of feed because they ________.

take time to grow and have a low energy conversion efficiency