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| The binomial system of plant nomenclature requires a plant name to have a genus and specific epithet that is derived from Greek. |
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| Liberty Hyde Bailey, the father of horticulture, created the binomial system of plant nomenclature we use today. |
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| Your last name is equivalent to a plan'ts genus. |
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| A cultivar is a man-made and/or human maintained plant variety. |
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| 90% of all cultivated plants have flowers and reproduce by seed. |
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| Gymnosperms have naked seed and either simple or compound leaves. |
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| Angiosperms are subdivided into monocots or dicots. |
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| Monocots compromise about 22% of all seed-bearing plants. |
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| Dicots have leaves with a midrib, floral parts in multiples of 4 or 5, and produce nearly all the fresh fruits we eat. |
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| Plants in the mint family have square stems and are able to fix nitrogen from the atmosphere. |
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| False (Can't fix nitrogen from the atmosphere) |
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| Stomata, found on the udnerside of leaves, are surrounded by guard cells. |
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| A poinsetta bloom is really modified bracts, not petals. |
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| Modified stems, like a potato and onion, are capable of photosynthesis. |
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| A bud is present at each node, even though it may be underdeveloped and difficult to see. |
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| The vascular bundles in dicots stems are arranged in a scattered pattern. |
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| Poinsettia is a poisonous plant. |
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| Adventitious roots grow from any tissue other than root tissue. |
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| Poinsettias were propagated in lab using stem tip cuttings; cuttings that contain a terminal bud. |
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| Sweet potatoes are modified roots capable of storing large quantities of carbohydrates. |
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| A pistil is made up of an anther and filament. |
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| Seedling citrus trees have thorns when they are young because they are in the juvenile stage of growth. |
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| Sweet peppers can be pollinated and fetilized by tomatoes. |
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| Asparagus is a dioecious perennial vegetable with a 20-25 year life span. |
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| Fruit ripening is caused by the auxin, a plant hormone produced by the fruit. |
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| Dormancy is a stage of development when a plant slows or stops growing. It is usually caused by environmental changes like drought, or cold weather. |
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| Cell walls are mostly cellulose, a sugar plymer, which is digestible by humans. |
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| Chloroplasts comprise about 90% of a mature plant cell. |
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| Chromoplasts give flowers and fruits their color. |
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| Guttation is the loss of nearly pure water through the hydathodes in the leaf margins. |
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| Floral nectaries secrete sugary substances that attract pollinators to flowers. |
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| Xylem tissue is responsible for transporting carbohydrates from source sites to sink areas. |
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| The age of a tree can be determined by counting the annual rings (previous secondary xylem). |
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| Urushiol is the compound in poison ivy responsible for causing allergic skin rashes in many people. |
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| Seeds should be sown at a depth equal to the diameter of the seed. |
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| Fertilization is the transfer of pollen from an anther to the sticky surface of a stigma. |
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| ls are low in organic matter. |
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| Sandy soils have high cation exchange capacity. |
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| Nitrogen is an essential primary micronutrient. |
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| The newest foilage on a plant will exhibit immobile nutrient deficiency symptoms. |
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| Iron chlorosis on pin oaks is commonly due to elevated soil pH and not a lack of iron in the soil. |
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| Typically Missouri soils contain 3-4% organic matter. |
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| The ideal soil pH for a majority of garden plants is 4.5-5.5. |
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| Soil pH affects the availability of essential nutrients in the soil. |
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| Sphagnum peat moss is a good soil amendment because it has a high water holding capacity and a moderate rate of decomposition, but it's hydrophobic. |
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| Water movement in a plant is due to the forces of adhesion, cohesion, osmosis, capillarity, and transpirational pull. |
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| Garden mums can be grown in partial shade. |
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| Micronutrients, also called trace elements, are essential plant nutrients that are needed in very small quantities. |
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| Plants absorb the majority of soil moisture through the root hairs. |
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| Nitrogen is the central atom of a chlorophyll molecule. |
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| Herbaceous plants have woody stems. |
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| Xylem tissue is the portion of a plants vascular system that is responsible for transporting food (sugars, protein etc) throughout the entire plant. |
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| Applying iron fertilizer to a pin oak showing iron chlorosis will correct the deficiency. |
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| Because nitrogen is water solule it is prone to leavhing and runoff. |
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| Blueberries are plants that prefer a pH 4.0. This pH is much lower than post garden plants prefer. |
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| Spring time is the best time of the year to lower a soil's pH by incorporating sulphur. |
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| Stomata are pores in the underside of a plant leaf that allows water vapor to exit the leaf. |
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| Plants utilize light in the red, yellow and blue portion of the visible spectrum. |
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Definition
| False (only red and blue) |
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| Topsoil, the upper layer of a soil profile, contains the most organic matter and microorganisms. |
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| Potassium deficiency causes the underside of leaves to turn purple. |
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| Spinach and lettuce are common crops in a fall garden. |
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| C4 plants are most efficient at photosynthesis because they have higher rates of photorespiration. |
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Definition
| False (bad photosythesis, yes high rates of photorespiration) |
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| Gaden mums produce large numbers of small sized flowers. |
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| Carbohydrates, in the form of sugar, are produced via photosynthesis. |
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| Air content of a soil is inversely related to the water content. |
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| Organic fertilizers are made from synthetic products. |
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| Blue baby syndrome is caused by excessive magnesium in the drinking water. This tainted water prevents blood from absorbing oxygen normally. |
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| Subsoils have little organic matter, few mineral nutrients and the parent material is slightly weathered. |
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| Deer will not eat tulips growing in a home landscape. |
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| Soil microbes are beneficial to plants because they break down the inorganic matter that's in the soil and release the nutrients that were bound inside the inorganic matter. |
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Definition
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| Spring is the best time of the year to lower a soi's pH by incorporating sulfur. |
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| Parthenocarpic fruits form without pollination and hence they are seedless. |
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Definition
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| Nitrogen is the central atom in a chlorophyll molecule and that's why plants deficient in nitrogen appear chlorotic. |
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| A ribbon test is a quick way to estimate the amount of clay present in the soil. |
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| Because cations are positively charged ions and clay particles are negatively charged the two are attracted to eachother and help reduced nutrient loss due to percolation. |
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| A starter fertilizer solution, which is high in potassium, is used to help vegetable transplants root quickly into the soil. |
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Definition
| False (phosophorus helps roots) |
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| Because essential plant nutrients are water soluble, root hairs inadvertently uptake these nutrients when water is absorbed. |
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Definition
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| Interveinal chlorosis means a leaf is green but the veins will be yellow. |
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| Sphagnum peat moss is a good organic amendment for clay soils because it has a high water holding capacity, has a moderate rate of decomposition and is acidic in pH. |
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Definition
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| Micronutrients are also called trace elements. |
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Definition
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| Phosphorous is frequently deficient in Missouri soils because it is highly water soluble and leavhes away. |
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Definition
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| Micronutrients availability increases as soil pH increases. |
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Definition
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| Chelated iron is commonly sprayed on a plant's foliage to correct an iron deficiency. |
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| Plants prefer nitrogen in the ammonium form. |
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| Organic mulches are a great way to utilize waste products. |
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| Newly created composting systems can be inoculated with compost starter, garden soil or unprocessed cow manure as a means of introducin the needed bacteria. |
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Definition
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| The youngest foliage on a tre with be the first to display mobile nutrient deficiency symptoms. |
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| The pH of garden soil can be decreased by incorporating aluminum sulfate; howerver, this product can cause aluminum toxicity. |
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Definition
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| Spring flowering bulbs should be planted in the garden by Labor day. |
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| A soil that has a pH of 7.8 is too alkaline for most garden plants. |
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| Water percolates slowly through clay soils. |
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