NOCTI Plant Science Practice Test

These questions are part of the practice quiz. Start practicing

• Soil porosity is directly related to which factor?
• Which trio of elements is considered the primary macronutrients for most plants?
• Scale is an insect pest that damages plants by which action?
• Mulching can improve soil structure by:
• What are common signs of nitrogen deficiency in plants?
• Tulips overwinter as which structure?
• Which of the following is a sign of calcium deficiency in plants?
• A/an ____ plant completes its life cycle in one year or growing season.
• Which symptom indicates drought stress on a lawn?
• What is a 'hardscape' in landscaping?
• Which plant tissue conducts sugars and nutrients throughout the plant?
• Organic matter in the soil provides all but which property?
• Which process forms carbohydrates from carbon dioxide, water, sunlight and chlorophyll?
• Biennial plants complete their life cycle in how many growing seasons?
• What is the purpose of using a pH meter or soil test kit?
• Define "mass flow" in nutrient uptake?
• What major function do root hairs perform in a plant root?
• Vegetative growth is largely controlled by light; optimum light causes internodes to be
• A good definition for a shade tree is a:
• The three major plant food elements are
• How do respiration and photosynthesis differ in energy flow?
• Nematodes are best described as
• The two most common root systems are
• Which trio of insects is commonly used as beneficials in IPM?
• Which fertilizer ratio among the given options has the highest nitrogen percentage?
• In a humid environment, powdery mildew appears as what on the leaves of lilac, crape myrtle, chrysanthemums, asters, and roses?
• Which plant hormone is mainly responsible for cell elongation and phototropism?
• Which term describes a plant that completes its life cycle within a single growing season?
• What is the difference between annuals, biennials, and perennials?
• Which of the following is an IPM practice?
• The term, ____, describes the process of propagating plants from seed.
• A serious disease of roses is which of the following?
• Spruces are conifers native to which region?
• Tissue Culture
• In tissue culture, which description best fits its propagation type?
• Grafting is primarily used to combine desirable traits from two plants.
• What are typical germination requirements for many seeds?
• Xeriscaping is best described as including which components?
• Which insects transmit viruses and bacteria in plants while feeding?
• Anti-transpirants have which effect on plants?
• Herbicides that kill some plants with little or no injury to others are called
• The smallest soil particles are
• The signal word(s) that indicate the product is most toxic to an applicator is
• An example of a broadleaf weed would be
• Which of the following is an example of bedding plants?
• What is the primary purpose of photosynthesis for plants?
• Plastic coating is a common formulation of a slow release fertilizer. Release is dependent on:
• Marigolds and petunias are
• In seed germination, some species require light to germinate, while others require darkness. Which statement is true?
• In the N-P-K fertilizer formula, which nutrient does the middle number represent?
• Which sign is used to indicate slow-moving vehicles, and what colors does it typically display?
• Which irrigation method is most water-efficient for landscapes and row crops?
• What is layering as a propagation method?
• A foliar disease would appear on which part of a plant
• The ____ of the flower contains pollen.
• When a cutting becomes callused, what will it soon form?
• By crowding extra plants into a growing area and/ or excessively shading them, the result will be ____ growth.
• What organelles are the site of photosynthesis?
• Which mineral transport system moves water upward from roots to leaves?
• Seed treatment to break dormancy requiring exposure to chilling temperature is called:
• What is a plant hardiness zone?
• Which macronutrients are required in the largest amounts by most plants?
• Which part of the flower develops into fruit after fertilization?
• In phloem transport, what is the role of a sink?
• In a fertilizer 10-6-4, what percent nitrogen does it contain?
• Interveinal chlorosis in young leaves is most commonly associated with which deficiency?
• Which factor is generally not required for seed germination?
• In phloem transport, what is the role of a source?
• What soil property binds positively charged ions on the surface of soil particles?
• What is the primary purpose of herbicides?
• An F1 hybrid annual is considered to be better than inbred plants because
• The binomial system of naming plants uses the ____ sequence.
• A common symptom of spider mite infestation is?
• Good soil management practices include proper pH level, fertilizing, good tillage practices, adequate irrigation, and which practice?
• Which document provides hazard information and safety data for pesticides?
• Which of the following is NOT a factor that influences a plant's transpiration rate?
• Garden soil should be subjected to a chemical soil test to determine:
• Which practice would reduce the transpiration rate in plants?
• Thorns and tendrils are modified versions of which plant part?
• Plants that hold their leaves during the dormant season are called:
• What is Cation Exchange Capacity (CEC) in soils?
• What is transpiration?
• Which statement about mulch is true?
• What is the main difference between formal and informal gardens?
• Which structure in a grass plant is responsible for new growth?
• What is the main reason for split-application of fertilizer?
• Express the scientific names of plants in ____.
• The ____ of the plant produces or manufactures food.
• Spruces belong to which plant category?
• Grafting, the jointing of parts of two plants to make a single plant, is used to:
• What occurs after a cut end calluses?
• Which insect control method is most effective against borers?
• Which tissue transports sugars from sources to sinks in a plant?
• Tulips overwinter as which structure?
• Xeriscaping emphasizes which of the following for water conservation?
• Water enters a plant through the roots and is conducted through the plant in the
• Plants with stems that are soft and fleshy are described as being
• What is the main purpose of pruning in landscape maintenance?
• Which practice helps maintain soil fertility and structure?
• A biennial plant completes its life cycle in how many growing seasons?
• Herbicides are chemicals used to control
• Which essential nutrient is not readily available from air or water and must be supplied to plants?
• Plant hardiness zones are used to predict plant survival based on what factor?
• How does mulching benefit plant root systems?
• Which process primarily drives water movement in the xylem from roots to leaves?
• Budding in horticulture involves inserting a single bud under the bark of the rootstock.
• The term for two common root systems is
• Plugs are transplanted into
• Which term refers to a woody plant grown with a single trunk and a broad, rounded crown?
• Which of the following is a NOCTI Plant Science career path?
• IPM is best described as what?
• If an area to be fenced measures 30 feet on each of the four sides, what is the total length of fencing required?
• An insect has ____ legs.
• Drip irrigation delivers water primarily to:
• Higher Cation Exchange Capacity (CEC) in soil generally increases its ability to hold what?
• When moving nursery stock, care should be taken to
• Black Spot is a disease that primarily affects which plant group?
• What rooting hormone is commonly used in cuttings?
• Which cultural practice helps prevent powdery mildew as part of IPM?
• Which essential plant nutrient is not readily available from the atmosphere or water?
• Soil pH affects nutrient availability by influencing what two factors?
• Fertigation is best described as what?
• Which symptom indicates air pollution damage in plants?
• Which is NOT a soil particle?
• The term transpiration refers to water loss from a plant through the ____.
• A herbicide treatment applied after the crop or weed appears is called?
• What is the difference between apical and lateral meristems?
• Which nutrient deficiency is typically indicated by pale green leaves with older leaves yellowing?
• What is the difference between softwood and hardwood cuttings in propagation?
• A ____ plant that lives for five or more years
• Fertigation delivers nutrients through what system?
• The term that refers to pollen from the same flower or from different flowers on the same plant causing seed development.
• Pinch the center bud from plants to cause:
• The diameter of a tree refers to the
• What career opportunities are commonly associated with NOCTI Plant Science?
• A plot measures 40 feet by 60 feet. What is the square footage of the plot?
• Adding soil organic matter primarily improves which property?
• Which container are plugs transplanted into?
• The calyx is made of what structures?
• Some plants are grown in cold frames. Cold frames are
• A flower that contains both male and female parts is a/an ____ flower.
• Pesticides should always be stored in which containers?
• Espalier is a technique where a plant is:
• Pinching the center bud leads to
• If the numbers 10-6-4 in a fertilizer formula stand for the percentages of certain nutrients, the #6 represents:
• What are common signs of iron deficiency in plants?
• What is the first sign of drought on a grass lawn?
• Which one of the following pests causes the most damage to lawns?
• Which of the following is NOT an example of IPM according to the given list?
• Integrated Pest Management (IPM) is best described as?
• Which action is most appropriate when moving nursery stock to help maintain plant health?
• Soil pH test determines ____ level.
• The slow moving vehicle sign is best described as
• Which soil property describes the capacity to hold and exchange positively charged ions?
• Aphids and whiteflies damage plants by which mechanism?
• The main region of growth for a blade of grass is the
• In leaf anatomy, which two cell types comprise the mesophyll to optimize photosynthesis?
• How many pounds of 10-6-4 fertilizer are needed to apply two pounds of actual nitrogen?
• Heavy nitrogen fertilizer applications on trees and shrubs may:
• What does a 10-10-10 NPK fertilizer indicate?
• Which plant tissue conducts sugars from the leaves to other parts of the plant?
• In grafting, why is cambium alignment important?
• What is the primary function of phloem tissue?
• Powdery mildew and IPM address it as which type of disease, and how is it addressed?
• Roses can be propagated by budding. Budding refers to the process by which a
• If a rectangular fenced plot measures 30 feet by 40 feet, what is the total length of fencing required?
• Thorns and tendrils are modified what?
• What is the primary function of the calyx in a flower?
• How many pounds of 10-6-4 fertilizer are needed to apply two pounds of actual nitrogen?
• Which process stores energy by building sugars?
• The reason garden rakes should be stored in a rack or on a wall by the head is:
• Pomes are:
• Which soil layer has the most organic matter?
• How does soil pH influence nutrient availability?
• Air pollution damage to plants is characterized by which symptom?
• Which input is generally not required for seed germination?
• In a fertilizer label such as 10-6-4, what does the middle number represent?
• Which storage practice is recommended for pesticides?
• Which term describes a plant that lives for more than two years, often five or more?
• Which practice helps manage pests and diseases by altering the growing environment rather than pests themselves?
• Plants that are watered incorrectly are most susceptible to which condition?
• Plants planted in saturated soil may:
• Microscopic hair-like worms that live in the soil and feed on plant roots are
• Pesticide labels are legal documents.
• Which soil texture typically retains the most water?
• The term ____, refers to flower production.
• Pesticide labels are
• What is soil organic matter and why is it important?
• Organic mulch applied in the very early spring can:
• Which of the following describes a typical IPM approach?
• Sucker sprouts growing from the roots of grafted or budded cultivars should be:
• Borers are insect pests that can be most effectively controlled by which type of insecticides?
• What distinguishes fungal diseases from bacterial diseases in plants?
• Which term describes the production of flowering plants for ornamental use?
• Which term describes non-living elements used in landscape design?
• Which is an example of a soil amendment?
• Cuttings can be stored briefly in a refrigerator before planting because stored food in the plant is utilized more slowly under cold conditions.
• What is the purpose of soil testing before planting?
• Which term describes plants with non-woody stems?
• How is the term 'days to harvest' on a pesticide label best described?
• Which mowing height is commonly recommended for most turf grasses during active growth?
• Espalier is a technique in which a plant is:
• Among the listed lawn fertilizers, which option provides the highest nitrogen content?
• What role does light quality play in photosynthesis and plant growth?
• What is a basic prerequisite for sound management decisions?
• Which lawn fertilizer option contains zero nitrogen?
• A nutrient deficiency of plants that first appears on young leaves as an interveinal chlorosis is:
• In a fertilizer formula such as 10-6-4, the last number represents which nutrient?
• Which statement best describes a broadleaf weed?
• When applying pesticides, which practice is essential?
• Besides labels, which document contains information about pesticides such as medical conditions they may aggravate and primary routes of entry?
• Before cuttings are planted in propagation medium, they are often treated to
• Which term describes a herbicide applied after the crop or weed has emerged?
• The function of plant stems is to
• Which type of plant is commonly used as rootstock to influence vigor and hardiness of the grafted cultivar?
• Protective gear while handling pesticides is necessary during which activity?
• The viability of seeds refers to the
• The majority of people who are fired from their jobs lose them because of which issue?
• Which statement best describes a soil amendment?
• Which plant tissue is primarily responsible for photosynthesis in leaves?
• The fertilizer element most related to root growth in plants is
• Why is crop rotation beneficial in pest and disease management?
• The main reason for split-application of fertilizer is to: