Basic Crop Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| In a germinating dicot seedling, if the end of the radical or primary root dies, what type of root system results? | show 🗑
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| In the soil profile, we discussed 4 “horizons” or zones. Which two horizons contain most of the roots, moisture, and nutrients? | show 🗑
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| show | no central root system but a shallower system made up of roots about the same size
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| Fibrous root advantages | show 🗑
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| show | forms from the primary radical and is the central portion of the root system.
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| Taproot advantages | show 🗑
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| Radicle | show 🗑
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| show | seed roots that emerge from the embryo
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| show | roots that originate from tissue other than root tissue
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| Brace roots | show 🗑
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| show | protects the root
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| show | food storage area
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| Endodermis | show 🗑
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| show | develops the branch roots
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| show | transports sugar
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| Xylem | show 🗑
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| show | lateral extension of an epidermal cell that functions to increase the root’s surface area for nutrient and water uptake
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| Root cap | show 🗑
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| Root cap region | show 🗑
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| show | meristematic region where new cells are produced behind the root cap
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| Cell elongation zone | show 🗑
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| Differentiation zone | show 🗑
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| Maturation zone | show 🗑
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| show | high plant population, weed competition, extreme cloudy weather, anything that decreases light to the plant
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| show | in the upper zones O and A where most of the nutrients and water are located
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| show | Xylem tissue moves water and nutrients up to the
stems; Phloem moves photosynthesis products downward to the growing points at the root tips
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| Which part of the root protects the meristematic region as it moves through the soil? | show 🗑
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| What are the xylem and phloem in the root called? | show 🗑
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| show | central axis of a plant that supports leaves, branches, and flowers
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| Leaf | show 🗑
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| show | solid stem of grasses like corn and sorghum
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| Culm | show 🗑
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| Nodes | show 🗑
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| Internode | show 🗑
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| show | located where the branch or leaf meets the stem
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| The meristem at the top of the plant can suppress axillary buds by hormone (auxin) activity. What is this suppression called? | show 🗑
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| Soybeans are considered legumes and can produce their own nitrogen. What type of leaf is the first true leaf after the cotyledons? | show 🗑
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| show | above ground horizontal stems that function in asexual reproduction. Example- Crowsfoot grass
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| show | underground, horizontal stem that sends out roots from its nodes. Example- Johnson grass
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| Crown | show 🗑
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| show | enlarged underground stems with a large amount of carbohydrates and nodes.
Example- Irish potato
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| show | Compressed modified stem composed mostly of fleshy leaves.
Example- Red onion
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| show | fleshy underground stem with few nodes and scaly, small leaves composed of stem tissue
Example- Timothy grass
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| show | growing point at the tip of grass stems where growth occurs from the bottom up
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| Stand density | show 🗑
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| Light intensity | show 🗑
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| show | Inflorescence
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| Pubescent | show 🗑
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| Glabrous | show 🗑
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| Transpiration | show 🗑
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| What factor(s) can cause corn to lodge | show 🗑
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| Photosynthesis | show 🗑
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| show | Oxidative breakdown of organic substances at low temperatures
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| Light striking the leaf has 3 options: | show 🗑
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| Carotenoids | show 🗑
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| In photosynthesis, there are light and dark reactions. What is the set of dark reactions referred to as? | show 🗑
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| show | reduce soil compaction. Reduce runoff and erosion
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| show | Increases smaller root system
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| show | 43560 ft^2
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| show | 2.471 acres
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| What % of Alabama's land is irrigated? | show 🗑
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| show | same as the vascular bundle
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| show | top of leaf below flower
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| show | 3-4 days between
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| show | grows 2-3" per day
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| show | 0 cotyledon
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| show | 1st true leaf in a soybean plant
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| Thrips | show 🗑
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| show | 1st February- early April
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| show | lodging increases
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| Planting date for cotton | show 🗑
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| Planting date for peanuts | show 🗑
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| show | Middle of April- middle of June
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| show | October-November
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| Lignin | show 🗑
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| show | ATP and NADPH
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| In respiration, ATP is produced from sucrose + oxygen + ADP + Pi. What is this set of reactions referred to as? | show 🗑
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