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Horticulture 120 Exam 1
N/A
40
Other
Undergraduate 2
10/12/2010

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Term
How does climate change affect our ability to grow crops?
Definition
-Changes growing season
-Reduces area that some crops can be grown in
-Longer growing seasons
-Allows invasive species
-Diversification of crops
Term
Basic Photosynthesis
Definition
C3
-Light and water come into grana, energy (ATP, NADPH) and oxygen come out
-CO2 and Energy go into stroma, Glucose comes out
Term
C4 Photosynthesis
Definition
-Separated in two cells
-Light reaction occurs in Mesophyll cell
-Calvin cycle in Bundle Sheath Cell
-CO2 uptake during the day
-Makes plant more efficient
-Corn, Grasses
Term
CAM Photosynthesis
Definition
-CO2 Uptake during the night
-Calvin Cycle during the day
-Stomata closed during the day to save water
-Pineapple, Cactus
Term
Differences in Horticulture and Agronomy
Definition
-Horticulture is smaller scale
-The scale affects the crops (wheat vs tomatoes)
-Horticulture is more care-intensive harvesting
Term
Ways Plants impact our lives
Definition
-Food
-Energy
-Buildings
-Cosmetics
-Furniture
-Air Quality
-Medicine
-Clothing
-Paper
-Religion
-Economics
-Art
Term
Three Organs in Plants
Definition
-Roots
-Stem
-Leaves
Term
Roots
Definition
-Gives the plant anchorage
-Sometimes used for storage
-Takes nutrients from the soil
Term
Stem
Definition
-Support
-Conduction
-Storage (modified stems)
-Photosynthesis
Term
Leaves
Definition
-Primarily photosynthesis
-Storage of food
Term
How could root structure determine a plants ability to survive in its environment?
Definition
Root structure affects how much water and nutrients the roots can absorb. If the soil is lacking nutrients the roots need to grow deeper, or have many hairs for more surface area with which to collect water and nutrients
Term
What do seeds need to germinate?
Definition
Some seeds need to be treated with severe cold, or with heat before they will germinate. This simulates natural conditions
Term
Transpiration
Definition
-The process of water traveling through the plant
-A water molecule is lost through the stomata by evaporation
-Since water molecules stick together, they pull each other up, one after the other
-As one evaporates, another is pulled up to take its place
Term
What environmental factors affect transpiration?
Definition
-Humidity
-Wind
-Sunlight
-Temperature
-Soil Moisture
Term
Joseph Priestly Experiments
Definition
-Because when the mammal was in the jar alone, or the candle was in the jar alone, the oxygen was used up and the animal or the flame died. However, when the plant was in the jar, the animal or flame did not die. It had oxygen constantly and the only thing different was the addition of the plant.
Term
How do we distinguish a plant cell from an animal cell?
Definition
-Cell Wall
-Chloroplast
-Vacuole
Term
Greenhouse gases
Definition
-Methane
-CO2
-Nitrous Oxide
-Chloroflurocarbons
-Hydrochloroflurocarbons
-Ozone
-Sulfur Hexafluoride
-Hydroflurocarbons
-Perflurocarbons
Term
How have greenhouse gas emissions changed in the past century?
Definition
Increased dramatically, causing global climate change
Term
Draw and give examples of two plant families
Definition
Draw it now!!
Term
Anaerobic vs Aerobic Respiration
Definition
-Anaerobic respiration occurs when there is a lack of oxygen
-Anaerobic respiration produces alcohol, fermentation
Term
Seed size in germination, dispersal, and predation
Definition
????
Term
Why a science system of classification?
Definition
-Because there are many plants with one common name "spring beauty"
-Plants have multiple common names
-Common names do not define relationships
-Common names can be misleading
Term
Broccoli vs Brussels Sprout vs Cabbage
Definition
-Broccoli: huge inflorescence
-Brussels Sprout: Large Modified axillary buds
-Cabbage: Many large leaves wrapped around a small stem
-Each harvested for a different part of the plant
Term
Harvested for...
Definition
Roots: carrots
Leaves: Kale
Axillary Buds: Brussels Sprouts
Stem: Kohlrabi
Seed: Sunflowers
Flower: Broccoli
Term
Characteristics of Mint Family
Definition
-Square Stems
-5 fused petals
-2 lips
-Opposite leaves
Term
Examples of Mint Family
Definition
-Mint
-Basil
-Salvia
Term
Uses of Leaves
Definition
-Photosynthesis
-Storage
-Conduction
Term
How are seeds dispersed?
Definition
-Wind
-Birds
-Insects
-Exploding Pods
-Water
-Ants
Term
Considerations for choosing seed
Definition
-Source of Seed
-Germination Requirements
-Methods of seeding
-Pretreatments
-Transplant Conditions
Term
Dicots vs. Monocots
Definition
Vascular bundles in a ring for dicots and spread throughout for monocots
Term
Modifications to reduce water loss
Definition
-Succulent Leaves
-Thick Cuticle
-Dense Leaf Hairs
-Leaf Shape
-Few/Sunken Stomata
-Alternate Photosynthesis
Term
Pigments
Definition
-Chlorophyll
-Carotenoids
Term
Characteristics of Sunflower Family
Definition
-Flowers (head)
-Aggregates/Composites
-Seeds: Achenes(carried by pappus)
-Includes plants native to North America
Term
Examples of Sunflower family
Definition
-Flower: sunflower, zinnia
-Herbs: tansy, tarragon, mace
-Vegetables: lettuce, Jerusalem Artichoke
Term
Characteristics of Nightshade Family
Definition
-Floral parts in 5 or 6
-Fruits, Berries, Ovary Wall edible
-Many members native to South America
Term
Examples of Solanaceae (Nightshade) family
Definition
-Vegetable: Eggplant, Pepper, Potato, Tomato
-Ornamentals: Chinese Lantern, Angel's Trumpet
-Herbs: Belladona ,henbane
Term
Characteristics of Carrot (Apiaceae) Family
Definition
-Flowers: compound umbel
-Food: leaves, seeds, roots
Term
Examples of Carrot (Apiaceae) Family
Definition
-Yarrow
-Dill
-Parsley
-Carrot
Term
Characteristics of Crucifer (Brassicaceae) Family
Definition
-Flowers: 4 petals (cross), different colors
-Fruits: Siliques (thin splitting pods)
-All Tissues used
Term
Examples of Crucifer (Brassicaceae) Family
Definition
-Vegetables: Brussels Sprout, broccoli, cabbage
-Weeds: mustard, rocket
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