Horticulture Exam Questions and Answers, Exams of Gardening and Horticulture

Download Horticulture Exam Questions and Answers and more Exams Gardening and Horticulture in PDF only on Docsity! HORT 201 Texas A&M Exam Questions And Answers what is the binomial system of nomenclature and who invented it? (2) - correct answer *naming species of living things *Carl Linnaeus T/F: Genus and Species should always be capitalized and underlined. - correct answer False, Genus is capitalized and species is lowercase what is the difference between vascular plant and non-vascular plant? (2) - correct answer *vascular: most horticulture plants, seedless (spore-bearing), seeded (cone-bearing) and seeded (seed in fruit) *non-vascular: no xylem or phloem what is the difference between angiosperm and gymnosperm? (2) - correct answer *angiosperm: flowering plants *gymnosperm: non-flowering plants since a turnip is a true storage tap root, would you expect the plant to be monocot or dicot? - correct answer *dicot in a dicot plant, if you were to count the # of petals, pistils, stamens, and sepals how many would you see? - correct answer *multiples of 4 or 5 HORT 201 Texas A&M Exam Questions And Answers since an onion is a true bulb would you expect the plant to be monocot or dicot? - correct answer *monocot what do the leaves look like on a monocot plant? - correct answer *parallel veined are grasses monocots or dicots? - correct answer *monocots when you mow grass, you cut off the apical meristems. of course the plant can send up new stems, but how do the stems you mowed continue to grow? - correct answer *intercalary meristem occurs at the base of the nodes and leaf blades why is it that dicots are sensitive to the herbicide 2,4-D and monocots are not? and how do they look on monocots & dicots? (3) - correct answer *because their meristems are different. *monocots= phloem and xylem in bundles scattered throughout *dicots= phloem and xylem are in rings Annual (2 examples) - correct answer *passes from seed germination to seed production in one growing season then dies. EX: merigolds, tomatos HORT 201 Texas A&M Exam Questions And Answers *protection function of a STEM: (5) - correct answer *support *conduction *storage *photosynthesis *protection function of ROOTS: (5) - correct answer *anchorage *nutrients and water absorption *storage *hormone synthesis *propagation list 3 sexual organs: - correct answer *flower *fruit *seeds function of FLOWER: (2) - correct answer *reproduction *attractants HORT 201 Texas A&M Exam Questions And Answers function of FRUITS: (1) - correct answer *seed distributor function of SEEDS: (1) - correct answer *distribute new plants away from parent plant list 3 modifications for Leaves Stems and Roots (3) - correct answer *Leaves: tendrils, bracts, spines *Stems: tubers, thorns, stolons *Roots:"tuberous" storage roots, large tap roots, aerial roots what are meristems? - correct answer *region where growth occurs what are the unique meristem found in monocots? - correct answer *intercalary meristems what are the unique meristem found in dicots? - correct answer *secondary meristem where do intercalary meristems occur? - correct answer *in the stems at the base of nodes and leaf blades where do secondary meristems occur? (3) - correct answer *gymnosperm HORT 201 Texas A&M Exam Questions And Answers *eudicots does not occur in monocots complete flower: - correct answer *contains all 4 parts incomplete flower: - correct answer *is missing one or more parts perfect flower: - correct answer *has both male and female parts, MAJORITY of flowering plants are perfect imperfect flower: (2) - correct answer *doesn't have male & female parts *monoecious and dioecious plants photosynthesis is the process of what? - correct answer *turning light energy to CO2 for food the light reactions take place where? (3) - correct answer *chloroplast *enzymes *stroma HORT 201 Texas A&M Exam Questions And Answers *it gives the plant its shape where does translocation of sugars take place? - correct answer *phloem what are the characteristics of the conducting tissues sieve cells? (3) - correct answer *thick *alive *small openings at junctions what is a companion cell? - correct answer *carries the sieve tubes cellular functions sugars move in a source to sink direction. is this direction up, down or both? - correct answer *both T/F: water is important only for movement of the minerals in the xylem - correct answer *false what is a plant hormone? - correct answer *chemical messengers that affect a plants ability to respond to its environment what are the 5 major plant hormones? - correct answer *auxin HORT 201 Texas A&M Exam Questions And Answers *cytokinins *gibberellins *abscisic acid *ethylene Auxin: - correct answer *aids in adventitious rooting Gibberellins: - correct answer *promotes flowering Cytokinins: - correct answer *stimulates cell division Abscisic Acid: - correct answer *induces bud and seed dormancy Ethylene: - correct answer *hastens fruit ripening what is the difference between biotic and abiotic environmental factors? (2) - correct answer *abiotic is non-living *biotic is living what are the 3 characteristics of light that affect plant growth? - correct answer *quality *quantity HORT 201 Texas A&M Exam Questions And Answers *duration quality of light: - correct answer *the wavelength or color of light quantity of light: - correct answer *the intensity or amount of light duration of light: - correct answer *determines the total amount of light energy received what wavelengths have the greatest effect on plant growth? and why? - correct answer *red and blue *b/c red + blue light encourages flowering what color is better for vegetative growth? - correct answer *blue why are shade leaves typically thinner and larger than sun leaves? (2) - correct answer *b/c they spread out to capture what light there is and have more chlorophyll which type of leaf exhibits greater rates of photosynthesis and transpiration? - correct answer *sun leaves HORT 201 Texas A&M Exam Questions And Answers and where do they come from (2)? - correct answer *carbon, hydrogen, and oxygen *supplied by air and water T/F: immobile elements only move down in the plant. - correct answer *false, they move up by acropctal transport T/F: a deficiency in an immobile element will appear on older leaves first - correct answer *false, they appear on new leaves T/F: the macronutrients are immobile elements - correct answer *false, micronutrients are why is soil pH important with regards to plant nutrients? - correct answer *soil pH determines the solubility of the mineral what is the ideal soil pH for field soil? - correct answer *6.5 what 5 chemicals could be used to increase pH of a soil? - correct answer *calcitic lime *dolomite *hydrated lime *calcium oxide HORT 201 Texas A&M Exam Questions And Answers *basic fertilizer (nitrate) what 4 chemicals could be used to decrease pH of a soil? - correct answer *elemental sulfer *aluminum sulfate *iron sulfate *acidic fertilizers (urea) what is soil and what forces create it? - correct answer *weathered geological material *climate forces create/weather it from a plants perspective what is the purpose of soil? (5) - correct answer *anchorage *mineral nutrients *water *gas exchange *buffer against extremes in temp & pH what is the difference between a histosol and a mineral soil? which do we have in Texas? (2) - correct answer *histosol is primarily made up of organic matter HORT 201 Texas A&M Exam Questions And Answers *mineral soil what percentage of a mineral soil is space for air and water? - correct answer *50% (25% each) T/F: the B horizon is also called the topsoil and the source of all fertility. - correct answer *false, the A horizon is the topsoil clay: (3) - correct answer *smallest *increase water retention, decrease availability *CEC of 10-100 silt: (3) - correct answer *intermediate particle size *intermediate water retention/drainage *CEC of 4-10 sand: (3) - correct answer *largest *increased drainage/decreased water retention *CEC of 2-4 LOAM is made up of= (3) - correct answer *40% sand *40% silt HORT 201 Texas A&M Exam Questions And Answers T/F: soils hold the least amount of water - correct answer *true where in texas are we likely to have acidic soil? and where in texas would we have alkaline soil? - correct answer *east soils are acidic and west soils are akaline how do you raise the pH of a soil? (2) - correct answer *limes *basic fertilizer how do you lower the pH of a soil? (2) - correct answer *sulfer containing compounds *sulfur/acidic fertilizer if you added a sulfur containing fertilizer would you raise or lower the pH of your soil? - correct answer *lower list 2 disadvantages that organic fertilizers have as compared to inorganic: - correct answer *are applied only to the soil not the plant *difficult to quantify and apply Organic or Inorganic, which type releases the nutrients more slowly? - correct answer *organic fertilizers HORT 201 Texas A&M Exam Questions And Answers what is the difference between complete and incomplete fertilizers? - correct answer *complete fertilizers contain all 3 of the primary macronutrients while incomplete supplies only 1 what do the numbers 10-20-10 mean on the label with regards to the amount of N, P, and K in the fertilizer? - correct answer *10% N *20% P *10% K what would be the total percent mineral content of a 10-20-10 fertilizer? - correct answer *40% total mineral content if you wanted to make your lawn greener which number would you care about most: N, P or K? - correct answer *N if you wanted a flowering or root growth what numbers would you care about? (2) - correct answer *low N *high P what is the definition of acidic soil and where are these types of soil found? (2) - correct answer *soil with acid pH (<7) in regions of high rainfall wooded areas HORT 201 Texas A&M Exam Questions And Answers what defines a basic soil? - correct answer *basic or alkaline, soils with basic pH (>7) what are the 3 types of basic soils? - correct answer *saline soil *sodic soil *saline-sodic soil