PSS 138 Exam 1 Questions & Answers 2024/2025
When did plant propagation begin? - ANSWERSwith agriculture 7000-10,000 ya
where did agricultural practices begin? - ANSWERS-Northeast Africa (Egypt), Middle East (Turkey & Iraq), China, Mexico, Central and South America (Peru) - Manchu pichu
...
When did plant propagation begin? - ANSWERSwith agriculture 7000-10,000 ya
where did agricultural practices begin? - ANSWERS-Northeast Africa (Egypt), Middle East (Turkey & Iraq),
China, Mexico, Central and South America (Peru) - Manchu pichu
Agriculture includes - ANSWERS-Plant selection (usefulness)
-Plant breeding (for specific traits)
-Plant propagation (selected plants chosen to maintain their traits)
-Crop production (growing under controlled conditions for maximum yield)
-Food technology (preserving plant products as a source of food)
What is controlled during cultivation? - ANSWERSenvironmental factors, edaphic factors, biotic factors,
genetic variation
Environmental factors (sometimes)
controlled during cultivation - ANSWERS•Water (irrigation/humidity)
•Light
•Wind
•Atmospheric gases
edaphic factors controlled during cultivation. - ANSWERS•Soil/rooting medium
•Soil water
•Soil gases
biotic factors controlled during cultivation. - ANSWERS•Insects
, •Worms/Nematodes
•Arachnids
•Bacteria
•Fungi
genetic variation controlled during cultivation. - ANSWERS•Create variation through hybridizing
•Prevent variation through clonal propagation
Hybrids clonally propagated by tissue culture or division
Or hybrids produced by seed
Human Soceities involved - ANSWERSgreek and romans, theophrastus in books, pliny the elder
earliest plants domesticated - ANSWERS•Seeds
-Cereals = wheat, barley, rice
-Legumes = beans and peas
•Cuttings
-Grapes
-Figs
-Olives (Xylella fastidiosa)
-Potatoes
-Yams
-Banana
-Pineapple
•Grafting
-Apple - Eurasia
-Pear - Eurasia
-Peach - China
-Apricot - China
-Citrus - China
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