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PSS Exam 1 Questions & Answers 2024/2025
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PSS Exam 1 Questions & Answers 2024/2025 Climate - ANSWERSkey influence on vegetation type that develops What is a plant? - ANSWERSany of various photosynthetic, eukaryotic, multicellular organisms of the kingdom plantae characteristically producing embryos, containing chloroplasts, having ...

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  • August 13, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • pss exam 1 questions answers

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PSS Exam 1 Questions & Answers
2024/2025

Climate - ANSWERSkey influence on vegetation type that develops



What is a plant? - ANSWERSany of various photosynthetic, eukaryotic, multicellular organisms of the
kingdom plantae characteristically producing embryos, containing chloroplasts, having cellulose cell
walls, and lacking the power of locomotion



Autotrophic organisms - ANSWERSuse light energy to fuel their own needs (photosynthesis)



Photosynthesis - ANSWERSmost important process on Earth; all life depends on it



Chlorophyll - ANSWERSplant pigment that captures light energy and converts it to chemical energy.
"Green Blood"



Plants are important because - ANSWERSfeed us, improve aesthetics, replenish our air, cure our ills, and
provide raw materials for industry



Agronomists - ANSWERSfield work; deal with wheat, corn, soybeans, cotton, forages



Horticulturists - ANSWERSgarden; deal with fruits, vegetables, woody ornamentals, and floriculture crops



Foresters - ANSWERSplant scientists interested in wood and pulp production along with recreation,
wildlife and watershed management in forested areas



What are the nonfood uses for plants - ANSWERS- Fiber crops (cotton, flax, hemp)

- Timber, fuel, pulp (recreation)

- Aesthetic (Egypt & China, indoor/outdoor, turfgrass)

, - Other uses (medical)



What do plants produce? - ANSWERSSugars



Food chains - ANSWERSpattern of flow of energy rich consumables through a biological system



What is the first vital link in food chains? - ANSWERSPhotosynthesizing plants



Amino acids needed by infants - ANSWERSArginine and Histidine



Heterotrophic organisms - ANSWERSmust ingest energy rich organic compounds to sustain life;
ultimately depend on plants



What are crop plants? - ANSWERSany plant used by man for any purpose



More than half the calories in many human diets come from 3 cereal grains. These cereal grains are? -
ANSWERSwheat, rice, and maize



In many places, where crops originated a diet emerged consisting of a cereal grain and a _____? -
ANSWERSlegume



The amount of energy striking a plant that is actually captured by photosynthesis is roughly 1-2%, and
roughly 1% of that is transferred when a herbivore consumes a plant. How much energy is transferred
when a carnivore or omnivore consumes a herbivore? - ANSWERS1%



Agriculture is a relatively recent development (10,000 to 12,000 b.p.). Where did agriculture first
develop? - ANSWERSseveral places at the same time



Plants are _______ organisms - ANSWERSautotrophic



GMOs (Genetically Modified Organisms) reduce.... - ANSWERSneed for pesticides and field tillage

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