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