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WorksheetsGene Technology (Genetically Modified Organisms)
Total questions: 25
Worksheet time: 25mins
Name
Class
Date
1.
The graph shows the area of land that was used to grow genetically modified crops in the USA, Brazil, India, and China from 2004 to 2015. Which of the following observations is wrong?
a)
USA produced the largest amount of GM crops all throughout the period in review
b)
China produced the lowest amount of GM crops all throughout the period in review
c)
The amount of GM crops produced by Brazil exceeded that of China all throughout the period in review
d)
The amount of GM crops produced by India in 2015 is exceeded that of China by more than double
2.
Which of the following may not well explay why the area of land used for GM crops cultivation in US exceeded that of Brazil
a)
demand for GM crops may be lower in brazil because many people may not be able to afford it there
b)
Brazil may have less land available for agriculture compared to USA
c)
Brazil ma have more laws restricting cultivation of GM crops compared to USA
d)
Brazil may prefer to import their GM crops from USA than to cultivate it
3.
Pick TWO benefits of growing GM crops
a)
Increased yield
b)
Increased affordability to consumers
c)
Reduced use of pesticides
d)
reduced use of fertilizers
4.
Pick TWO risks associated with cultivating GM crops
a)
spread of herbicide resistance to wild grasses
b)
spread of insect resistance to wild grasses
c)
death of ecologically important insects
d)
increase in biodiversity
5.
Which of the following activities can result in dereased biodiversity?
a)
increased use of herbicides
b)
increased cultivation of herbicide resistant crops
c)
reduced cultivation of herbicide resistant crops
6.
If insect pests bcome resistant to the toxins produced by insect resistant crops, what is NOT likely to happen as a result?
a)
increase cost of producing such crops
b)
increased used of insecticides and pesticides
c)
increased used of herbicides
7.
Which of the following cannot be regareded as a GM organism?
a)
Golden Rice
b)
Bt Maize
c)
Atlantic Salmon
d)
Chinook Salmon
8.
What is the unique feature of Goldenn rice?
a)
It is insect resistant
b)
it is herbicide resistant
c)
it has vitamin A in it
d)
it has golden yellow colour
9.
Which one has a FASTER growth rate?
a)
Atlantic Salmon
b)
Chinook Salmon
c)
Ocean Pout
10.
A transgenic pig is a pig that has been ……………..
a)
genetically altered to produces lean pork
b)
genetically altered to grow bigger and faster
c)
genetically altered to produce insulin
d)
genetically altered to be act clean
11.
Vitamin A enhanced rice may not solve the problem of vitamin A deficiency because …………………
a)
the rice is not as tasty as other natural breeds
b)
the rice may be to expensive for many people to purchase
c)
the rice doesn't get cooked quickly
d)
pests attack the rice readily
12.
To produce trangenic salmon, the desired genes are incorporated into ………………….
a)
the salmon sperms
b)
the salmon oocytes
c)
the salmon pituitary gland
d)
the salmon zygotes
13.
Farmers that cultivate herbicide resistant crops have high yield of crops because ………….
a)
their crops do not get attacked by insect pests
b)
their crops do not have to compete with weeds for soil nutrients
c)
their crops do not have to compete with weeds for sunlight
d)
their crops readily kill weeds that are growing nearby
14.
What causes the death of insect pests that attack insect resistant crops?
a)
the insects feed on the plant parts and ingest toxins that kill them
b)
the insects absorb toxins as they walk or move on the plants
15.
There is a gene that produces the toxic substance that kils insects that attack Bt maize. Where was that gene originally obtained from?
a)
Bacillus thuringiensis
b)
Bacillus thundergostis
c)
Bacillus tumafaciens
16.
Which of the following is not a potential benefit of cultivating Bt Maize>?
a)
increased yield for farmers
b)
less use of pesticides
c)
increased nutritional content
d)
reduced nutritional content
17.
Which of the following will contribute the LEAST damage to the ecosysystem
a)
growing insect resistant crops
b)
growing herbicide resistant crops
c)
cultivating insect resistant cotton
d)
cultivating Vitamin A enhanced rice
18.
Which of the following steps is NOT ESSENTIAL in producing transgenic organisms?
a)
the desired gene must be incorporated into the organism at the embryo stage
b)
the desired gene must be extracted from it's source and treated with restricted enzymes
c)
mRNA of the desired gene must be obtained from its source and used to produce cDNA
d)
gel electrophoresis must be used to identify embryos that have taken up the desired gene
19.
which of the following explains the mode of action of glyphosate?
a)
It inhibits synthesis of phenylalanine
b)
it inhibits DNA replication
c)
it inhibits photosynthesis
d)
it inhibits phosphorylation
20.
the active ingredients in most herbicides ……..
a)
glyphosate and glucophosate
b)
glyphosate and glufosinate
c)
glycophosphate and glucosinate
d)
glysinate and glucophosphate
21.
herbicide A is used in most farms and it can kill many economically important crops too. Which is the best and safest method for securing the crops from the destructive effects of the herbicide?
a)
use genetic technology to make the crops hydrolyse the herbicide
b)
use genetic technology to make the crops grow inspite of absorbing the herbicide
c)
use genetic technology to make the soil non-conducive for weeds to grow
22.
What is can be used to transfer the desired gene into a organism during production of GMO?
a)
liposomes
b)
shotgun
c)
Ti Bacteriophage
d)
E coli
23.
which conclusion can be drawn from the graph?
a)
Increasing cultivation of GM crops results in increased income for farmers
b)
increasing cultivation of GM crops resulst in increased emergence of insect-resistant plants
c)
increasing cultivation of GM crops result in increased emergence of toxin-resistant insects
24.
what can result in the emergence of invasive weeds?
a)
production of vitamin A enhanced rice
b)
production of GM salmon
c)
production of Bt Maize
d)
production of herbicide reistant oil seed rape
25.
one of the biggest disadvantage of cultivating GM crops is that ……………
a)
farmers need to use less herbicides
b)
farmers need to use more insecticides
c)
farmers need to buy fresh seeds every season
d)
reduced use of insecticide sprays minimises health risks farmers are exposed to
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