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SCSU BIO 101-S20 Botany Exam 1 - Prof. Silady questions well answered
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SCSU BIO 101-S20 Botany Exam 1 -Prof. Silady
why is It necessary to change current agricultural practices? - correct answer ✔✔- increasing population;
need for more food
- more sustainable farming practices
- the need to mitigate climate change
define food insecurity - correct answer ✔✔a condition in which people do not have adequate access to
food
define food desert - correct answer ✔✔Food deserts are defined as urban neighborhoods and rural
towns without ready access to fresh, healthy, and affordable food. Instead of supermarkets and grocery
stores, these communities may have no food access or are served only by fast food restaurants and
convenience stores that offer few healthy, affordable food options. The lack of access contributes to a
poor diet and can lead to higher levels of obesity and other diet-related diseases, such as diabetes and
heart disease.
define yield gap - correct answer ✔✔Difference between potential crop yield under optimal conditions
and yield under actual farming conditions
Reasons for the difference of a yield gap - correct answer ✔✔- pests such as insects, animals etc.
- drought
- soil fertility
- weather
- incomplete harvest
Ways to solve a yield gap - correct answer ✔✔- breeding better crops
- water management
- efficient use of fertilizer and pesticides
, Goals of Plant Research - correct answer ✔✔1) Breed resistance to emerging crop diseases
2) Breed plants adapted to saline,
acidic, and basic soils
3) Understand how crops and ecosystems will respond to climate change and increased CO2
4) Breed drought resistant crops
Chemicals in organic farming only control the _______ not the _______. - correct answer ✔✔pests;
weeds
How are weeds in organic farming managed? - correct answer ✔✔By tilling the soil
Define tilling soil - correct answer ✔✔Tillage is the agricultural preparation of soil by mechanical
agitation of various types, such as digging, stirring, and overturning
What is the impact of tilling the soil? - correct answer ✔✔- Reduction of beneficial organisms
(mycorrhizae)
- Reduced soil structure
- Increased soil erosion & water loss
- Increased use of fossil fuels
- Reduction of carbon sink
define carbon sink - correct answer ✔✔1) a forest, ocean, or other natural environment viewed in terms
of its ability to absorb carbon dioxide from the atmosphere
2) a natural reservoir that stores carbon-containing chemical compounds accumulated over an indefinite
period of time.
Define Crop Biotechnology - correct answer ✔✔Identifying genes responsible for traits & transferring
those genes to crops
Genomics - correct answer ✔✔Determining the sequence, structure, and
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