Aromatic & Medicinal Plants Lecture 1 Question Bank PDF

Aromatic & Medicinal Plants Lecture 1 QUESTION BANK 1_ An acre equals an area of : a) 4000 m2. b) 4100 m2. c) 4200 m2. d) 4300 m2. 2_ It represents 30% of Egypt's exports of Medicinal and Aromatic Plants’ by product....

Aromatic & Medicinal Plants Lecture 1 QUESTION BANK 1_ An acre equals an area of : a) 4000 m2. b) 4100 m2. c) 4200 m2. d) 4300 m2. 2_ It represents 30% of Egypt's exports of Medicinal and Aromatic Plants’ by product. a) Coriander seeds. b) Caraway seeds. c) Cumin seeds. d) Fennel seeds. 3_ Defined as a group of plants that have healing properties. a) Flower plants. b) Aromatic plants. c) Medicinal plants. d) Asexual plants. 4_ Its healing properties are as a result of the presence of complex chemical substances in one or more parts in these plants. a) Medicinal plants. b) Aromatic plants. c) Flower plants. d) Asexual plants. 5_ Which one of the following is an example of Medicinal plants? a) Jasmine. b) Rose. c) Datura. d) Vanilla. 6_ Which one of the following is an example of Medicinal plants? a) Sinameki. b) Rosemary. c) Jasmine. d) Anise. 7_ A group of plants that have aromatic oils in one or more of its parts which give an odor. a) Medicinal plants. b) Aromatic plants. c) Flower plants. d) Asexual plants. 8_ Volatile and Fixed oils which give an odor are found in: a) Medicinal plants. b) Flower plants. c) Asexual plants. d) Aromatic plants. 9_ Which one of the following is an example of Aromatic plants? a) Sinameki. b) Turmeric. c) Jasmine. d) Datura. 10_ Which one of the following is an example of Aromatic plants? a) Sinameki. b) Neem. c) Turmeric. d) Rose. 11_ Defined as chemical compounds produced by plants as a part of their normal metabolic activities. a) Agrochemicals. b) Photosynthesis. c) Phytochemicals. d) Acid chemicals. 12_ metabolites can be produced by all plants while metabolites produced by a smaller range of plants. a) Secondary / Primary. b) Primary / Secondary. c) Secondary / Tertiary. d) Tertiary / Quaternary. 13_ Which of the following is one of phytochemical primary metabolites? a) Toxins. b) Pheromones. c) Sugar. d) Oils. 14_ Which of the following is one of phytochemical primary metabolites? a) Toxins. b) Fats. c) Oils. d) Pheromones. 15_ Which of the following is one of phytochemical secondary metabolites? a) Toxins. b) Fats. c) Sugar. d) Oils. 16_ Which of the following is one of phytochemical secondary metabolites? a) Sugar. b) Fats. c) Pheromones. d) Oils. 17_ Chemical compounds that have therapeutic actions in humans and can be refined to produce drugs are phytochemicals. a) Primary metabolites. b) Secondary metabolites. c) Tertiary metabolites. d) Quaternary metabolites. 18_ are used to deter predators and produced by a smaller range of plants. a) Sugar. b) Fats. c) Toxins. d) Pheromones. 19_ are used to attract insects for pollination. a) Sugar. b) Fats. c) Toxins. d) Pheromones. 20_ The use of Plants for medicinal purposes and the study of such use is known as: a) Metabolism. b) Herbalism. c) Cosmetics. d) Aromatherapy. 21_ The use of aromatic plant extracts and essential oils for therapeutic purposes. a) Metabolism. b) Herbalism. c) Cosmetics. d) Aromatherapy. 22_ The use of Plants for medicinal purposes and the study of such use is known as: a) Metabolism. b) Alternative Medicine. c) Cosmetics. d) Aromatherapy. 23_ There are about plant species estimated to have a medicinal value. a) 250000. b) 350000. c) 450000. d) 550000. 24_ According to the WHO, of the population in some Asian and African Countries use herbal medicine for primary health care. a) 50%. b) 60%. c) 70%. d) 80%. 25_ The using of locally available materials from plants and animals as medicine systems in different countries. a) The individual medicine system. b) The traditional medicine system. c) The modern system. d) The Folk medicines. 26_ Ayurvida, Siddha and Nagarjuna, are systems of medicine were developed in: a) Mexico. b) China. c) India. d) Japan. 27_ A system was developed in the western countries, and it has various forms like Tablets, Capsules and injections which are manufactured using synthetic chemicals or chemicals derived from natural products like plants and animals. a) The individual medicine system. b) The traditional medicine system. c) The modern medicinal system. d) The Folk medicines. 28_ The harmful side effects of certain drugs and the rather high cost of drugs are disadvantage of. a) The individual medicine system. b) The traditional medicine system. c) The modern medicinal system. d) The Folk medicines. 29_ There is no written texts are available for this system and such systems are carried out by tribes. a) The individual medicine system. b) The traditional medicine system. c) The modern medicinal system. d) The Folk medicine. 30_ In this medicine system, the knowledge of treating diseases is guarded discreetly and is passed from one generation to the next verbally by mouth. a) The individual medicine system. b) The traditional medicine system. c) The modern medicinal system. d) The Tribal medicine. 31_ Any of the following are used in perfumery industry, cosmetics industry and as spices? a) Flower plants. b) Aromatic plants. c) Fertilizer plants. d) Ornamental plants. 32_ Sometimes a plant species could serve as a medicinal plant and an aromatic one at the same time such as: a) Turmeric. b) Lavender. c) Mentha. d) Datura. 33_ It is used in the perfume industry and is characterized by its violet color. a) Lavandula angustifolia. b) Salvia officinalis. c) Punica granatum. d) Calendula officinalis. 34_ Important for the heart muscle. a) Lavandula angustifolia. b) Salvia officinalis. c) Punica granatum. d) Calendula officinalis. 35_ It helps to raise blood pressure and is sometimes used as sweets. a) Achillea millefolium. b) Moringa oliefera. c) Glycyrrhiza glabra. d) Salvia officinalis. 36_ Its seeds purify water with high quality. a) Achillea millefolium. b) Moringa oliefera. c) Glycyrrhiza glabra. d) Salvia officinalis. With my best wishes.  Aromatic & Medicinal Plants Lecture 2 QUESTION BANK 1_ Aromatic and medicinal plants could be classified by all the following except: a) Growth habit. b) Commercial classification. c) Feeding classification. d) Pharmacological classification. 2_ Aromatic and medicinal plants that are classified as Perennials, Annuals and Biennials are classified by: a) Growth habit. b) Commercial classification. c) Morphological classification. d) Pharmacological classification. 3_ Aromatic and medicinal plants that are classified as Trees, Shrubs and Climbers are classified by: a) Growth habit. b) Commercial classification. c) Morphological classification. d) Pharmacological classification. 4_ Cassia fistula is a medicinal plant that grow as: a) Climber. b) Tree. c) Shrub. d) Biennials. 5_ Ceratonia siliqua is a medicinal plant that grow as: a) Climber. b) Biennials. c) Shrub. d) Tree. 6_ Lavandula is an aromatic plant that grow as: a) Climber. b) Biennials. c) Shrub. d) Tree. 7_ Jasminum is an aromatic plant that grow as: a) Climber. b) Biennials. c) Shrub. d) Tree. 8_ Datura sp. and Cannabis sp. are medicinal plants that grow as: a) Shrubs. b) Climbers. c) Annuals. d) Perennials. 9_ Calendula officinalis is a medicinal plant that grow as: a) Shrubs. b) Climbers. c) Annuals. d) Perennials. 10_ Cicuta sp. is a medicinal plant that grow as: a) Climber. b) Biennials. c) Shrub. d) Tree. 11_ Vinca, Datura, Hyoscyamus and Belladona are classified as according to Morphological Classification of aromatic and medicinal plants. a) Leaves. b) Flowers or Inflorescences. c) Whole plants or Herbs. d) Fruits. 12_ Tea, Basil, Mentha and Digitalis are classified as according to Morphological Classification of aromatic and medicinal plants. a) Leaves. b) Flowers or Inflorescences. c) Whole plants or Herbs. d) Fruits. 13_ Matricaria, Calendula and Chrysanthemum cinerariifolium are classified as according to Morphological Classification of aromatic and medicinal plants. a) Leaves. b) Flowers or Inflorescences. c) Whole plants or Herbs. d) Fruits. 14_ Pepper, Cardamom, Fennel and Anise are classified as according to Morphological Classification of aromatic and medicinal plants. a) Seeds. b) Roots (Rhizomes). c) Leaves. d) Fruits. 15_ Castor, Nigella, Flax and Fenugreek are classified as according to Morphological Classification of aromatic and medicinal plants. a) Roots (Rhizomes). b) Leaves. c) Seeds. d) Bark. 16_ Ginger, Liquorice and Iris are classified as according to Morphological Classification of aromatic and medicinal plants. a) Seeds. b) Leaves. c) Roots (Rhizomes). d) Bark. 17_ Cinnamon and Pomegranate are classified as according to Morphological Classification of aromatic and medicinal plants. a) Seeds. b) Leaves. c) Roots (Rhizomes). d) Bark. 18_ All the following are classified according to Morphological Classification except: a) Bark. b) Seeds. c) Purgatives. d) Leaves. 19_ Pharmacological Classification of Aromatic and Medicinal plants include all the following except: a) Laxatives. b) Analgesics. c) Herbs. d) Narcotics. 20_ Senna and Castor are classified as according to Pharmacological Classification of aromatic and medicinal plants. a) Cardiac tonic. b) Analgesics. c) Herbs. d) Purgatives. 21_ Poppy, Datura and Hyoscyamus are classified as according to Pharmacological Classification of aromatic and medicinal plants. a) Cardiac tonic. b) Analgesics. c) Laxatives. d) Purgatives. 22_ Tea and Coffee are classified as according to Pharmacological Classification of aromatic and medicinal plants. a) Narcotics. b) Stimulant Plants. c) Anti-capillary fragility. d) Cardiac tonic. 23_ Buckwheat and Rue are classified as according to Pharmacological Classification of aromatic and medicinal plants. a) Narcotics. b) Stimulant Plants. c) Anti-capillary fragility. d) Cardiac tonic. 24_ Squill, Digitalis and Nerium are classified as according to Pharmacological Classification of aromatic and medicinal plants. a) Narcotics. b) Stimulant Plants. c) Anti-capillary fragility. d) Cardiac tonic. 25_ Commercial Classification of Aromatic and Medicinal plants include all the following except: a) Beverages. b) Alkaloids. c) Condiments. d) Spices. 26_ Plants containing volatile or fixed oils are plants classified according to: a) Pharmacological Classification. b) Commercial Classification. c) Chemical Classification. d) Morphological Classification. 27_ Glycosides, Alkaloids and Resins are plants classified according to: a) Pharmacological Classification. b) Commercial Classification. c) Chemical Classification. d) Morphological Classification. 28_ According to the chemical classification of Datura sp., it is considered as: a) Plants containing fixed oils. b) Alkaloids. c) Glycosides. d) Resins. 29_ According to the chemical classification of Mentha sp., it is considered as: a) Plants containing fixed oils. b) Alkaloids. c) Glycosides. d) Plants containing volatile oils. 30_ According to the chemical classification the Sunflower, it is considered as: a) Plants containing fixed oils. b) Alkaloids. c) Glycosides. d) Plants containing volatile oils. 31_ According to the chemical classification the Digitalis, it is considered as: a) Resins. b) Alkaloids. c) Glycosides. d) Plants containing volatile oils. With my best wishes  Aromatic & Medicinal Plants Lecture 3 QUESTION BANK 1_ is produced as part of the photosynthesis process in the vegetative parts of the plant. a) Carbon Dioxide (CO2). b) Nitrogen (N2). c) Oxygen (O2). d) Phosphorus. 2_ is needed by all plant cells in the process of respiration. a) Oxygen (O2). b) Carbon Dioxide (CO2). c) Phosphorus. d) Nitrogen (N2). 3_ The more of granularity degree of the soil, the more in its. a) Humidity. b) Aeration. c) Drought. d) Fertility. 4_ is necessary for all vegetative parts of the plant during the process of photosynthesis. a) Oxygen (O2). b) Carbon Dioxide (CO2). c) Phosphorus. d) Nitrogen (N2). 5_ Burning wood or coal is a method to raise the percentage of. a) Oxygen (O2). b) Phosphorus. c) Carbon Dioxide (CO2). d) Nitrogen (N2). 6_ The only source of energy needed for photosynthesis is. a) Chemicals. b) Organic compounds. c) Inorganic compounds. d) Light. 7_ Which one of the following is an example of plants that need to be grown in shady places? a) Mentha. b) Datura. c) Coffee. d) Red pepper. 8_ Which one of the following is an example of plants that need intense light? a) Cinnamic. b) Black pepper. c) Coffee. d) Red pepper. 9_ that obtained from the photosynthesis have an indirect relationship with the growth and spread of the root system. a) Amino acids. b) Carbohydrates. c) Lipids. d) Oils. 10_ Tobacco plant is an example of. a) SDP. b) LDP. c) LSDP. d) Glycosides. 11_ Hyoscyamus plant is an example of. a) SDP. b) LDP. c) LSDP. d) Glycosides. 12_ Sunflower plant is an example of. a) SDP. b) LDP. c) LSDP. d) Glycosides. 13_ Respiration of plants increases by the increase of. a) Fertilizers. b) Soil reclamation. c) Irrigation. d) Temperature. 14_ The rate of absorption of water and salts by the roots increases with the increase in. a) Gases. b) Humidity. c) Temperature. d) Fertility. 15_ The plants transpiration increases by the increase of. a) Temperature. b) Gases. c) Humidity. d) Fertility. 16_ In the desert areas, the humidity percentage is. a) Low. b) Moderate. c) High. d) Near to zero. 17_ In valleys and river deltas, the humidity percentage is. a) Low. b) Moderate. c) High. d) Near to zero. 18_ In coastal areas, the humidity percentage is. a) Low. b) Moderate. c) High. d) Near to zero. 19_ Plants with underground stems grow well in. a) Calcareous soils. b) Sandy soils. c) Loamy soils. d) Acidic soils. 20_ Mint, Basil and Thyme are plants that grow well in. a) Calcareous soils. b) Sandy soils. c) Loamy soils. d) Acidic soils. 21_ Lavender and Datura are plants that grow well in. a) Calcareous soils. b) Sandy soils. c) Loamy soils. d) Acidic soils. With my best wishes.  AROMATIC PLANTS Lec 4 - Question Bank 1) Chemical fertilizers and Pesticides are used in…. a) Organic farming method b) Traditional farming method c) Biodynamic farming method d) Hydroponic farming method 2) Chemical fertilizers are replaced with Poultry manure in… a) Inorganic farming method b) Traditional farming method c) Biodynamic farming method d) Hydroponic farming method 3) Chemical growth regulators are used in… a) Organic farming method b) Traditional farming method c) Biodynamic farming method d) All of the above 4) Compost is used in… a) Biodynamic farming method b) Traditional farming method c) Inorganic Farming Method d) Hydroponic farming method 5) In the Biodynamic farming method, farmers enrich the soil with… a) Cattle Manure b) Ammonium phosphate c) DDT d) Urea 6) Farmers get rid of weeds by using of… a) Fertilization b) Thinning c) Irrigation d) Shoveling 7) What is the purpose of registering a farm with a company or union? a) To receive financial aid b) To gain access to specialized equipment c) To receive guidance in farming methods d) To qualify for tax exemptions 8) Farmers pay Registration, Follow-up, and Supervision fees to unions and companies in… a) Biodynamic farming method b) Organic Farming Method c) Traditional Farming Method d) Hydroponic farming method 9) What is the advantage of using chemical fertilizers and pesticides? a) Low cost b) High export demand c) Sustainable agriculture d) Easy to implement 10) What is a disadvantage of using traditional farming practices? a) Low crop yields b) Lack of government support c) Higher risk of crop failure d) Not valid for exporting pesticide-free products 11) How does the farmer combat pests? a) By using chemical pesticides b) By using non-polluting materials and vital enemies and predators c) By using both chemical pesticides and non-polluting materials and vital enemies and predators d) None of the above 12) What is one of the disadvantages of the organic farming method? a) Requires some special conditions that may not be available or easy to implement b) It reduces the yield and quality of the product c) It exposes the product to contamination and spoilage d) It requires alot of pesticides and chemical fertilizers 13) Farmers use Thinning to… a) Process of harvesting crops b) Control the growth intensity of plants  c) Get rid of weeds d) Irrigate the plants 14) Thinning is necessary to…. a) Obtain the maximum vegetative, flowering, or fruit production b) Reduce the maximum vegetative, flowering, or fruit production c) Increase the use of chemical fertilizers d) Increase the use of pesticides 15) The 3 most important minerals for plants are… a) Sodium, chlorine, and sulfur b) Carbon, hydrogen, and oxygen c) Magnesium, calcium, and iron d) Nitrogen, phosphorus, and potassium 16) An element that’s added alone to aromatic plants that produce seeds to raise seed and fruit production? a) Nitrogen b) Phosphorus c) Potassium d) None of the above 17) Which type of fertilizers can be added in large quantities to plants of the Lamiaceae family? a) Organic fertilizer b) Inorganic fertilizer c) Mixed fertilizer d) None of the above 18) Which plant family requires less organic fertilizer? a) Lamiaceae b) Apiaceae c) Rosaceae d) Rutaceae 19) Which element is necessary for rhizomes such as ginger, corms such as saffron, and bulbs such as onions? a) Nitrogen b) Phosphorus c) Potassium  d) None of the above 20) The process of providing plants with water is called… a) Fertilization b) Thinning c) Irrigation d) Shoveling 21) Which family of plants is in the greatest need of water during their different stages of growth? a) Poaceae family b) Lamiaceae family c) Apiaceae family d) None of the above 22) An example of a tree that needs less water to deepen its roots into the soil in all directions, is… a) Camphor tree b) Cardinal flower c) Black gum tree d) Lemongrass 23) How can weeds be disposed of? a) By Natural methods manually b) By Chemical methods c) Both by Natural methods manually or by Chemical methods d) By Physical methods 24) Which of the following can act as hosts for most insects and diseases? a) Native plants b) Exotic weeds c) Pesticides d) Chemical Fertilizers 25) The purpose of deep plowing is… a) To eliminate insects, their pupae, larvae, and eggs. b) To add more insects, their pupae, larvae, and eggs. c) To use chemical fertilizers on insects. d) To promote insects nutrition.  AROMATIC PLANTS Lec 5 - Question Bank 1) The percentage of active ingredients do glycosides, alkaloids, fixed oils, volatile oils, and others represent in plants, is… A) 90% B) 80% C) 70% D) 60% 2) Glycosides contain… A) Carboxyl group B) One or more molecules of simple sugars C) Both a Hydroxyl group and one or more molecules of simple sugars D) Both a Carboxyl group and one or more molecules of simple sugars 3) Which of the following is extracted from willow bark? A) Salicin B) Anthocyanin C) Sinoside D) Saponin 4) Which of the following is extracted from aloe vera and cinnamic plants? A) Salicin B) Anthocyanin C) Sinoside D) Saponin 5) What is an alkaloid? A) A basic organic compound that has acidic properties B) A basic organic compound that has alkaline properties C) An acidic organic compound that has basic properties D) An acidic organic compound that has acidic properties 6) What does an alkaloid contain? A) Nitrogenous bases such as purine or pyrimidine bases B) Carbonic bases such as purine or pyrimidine bases C) Nitrogenous bases such as carbonic bases D) Carbonic bases such as carbonic bases 7) Which plant is known for its alkaloid narcotin and morphine? A) Poppy B) Hibiscus  C) Aloe vera D) Willow bark 8) What are some unsaturated fatty acids found in fixed oils? A) Oleic and linoleic B) Oleic and linolenic C) Linoleic and linolenic D) Ricinoleic and others 9) Which of the following is NOT a plant that contains fixed oils? A) Castor B) Flax C) Wheat D) Olives 10) What are volatile oils? A) Compounds that solidify at room temperature B) Compounds that volatilize at room temperature C) Compounds that are insoluble in water D) Compounds that are highly reactive 11) Isoprene units consists of… A) 5 Carbon atoms B) 5 Hydrogen atoms C) 5 Nitrogen atoms D) 8 Carbon atoms 12) Which of the following is NOT a factor that affects the percentage of oil extracted from plants? A) The age of the plant B) The date of harvest C) The method of composition of the essential oil D) Various agricultural factors 13) Which of the following agricultural factors don’t affect the percentage of oil extracted from plants? a) Soil type b) Fertilization c) Irrigation d) Weight of seed 14) Which of the following is not a type of distillation for extracting volatile oils? A) Hydro distillation  B) Hydro-steam distillation C) Steam distillation D) Vacuum distillation 15) Which of the following is a type of extraction using animal fats (fixed solvents)? A) Cold extraction using fats B) Hot extraction using fats C) Both A and B D) Neither A nor B 16) Which of the following is a reason to use extraction with organic solvents? A) The aromatic oil does not tolerate high temperatures B) The aromatic oil tolerates high temperatures C) The aromatic oil is not affected by temperature D) The aromatic oil tolerate ice only 17) Flowers that are typically extracted using organic solvents, are… a) Sunflowers and dandelions b) Roses and lilies c) Narcissus and jasmine d) Poppies and daisies 18) Which of the following is NOT an organic solvent used in extraction with organic solvents? A) Petroleum ether B) Benzene C) Pure hexane D) Sodium chloride 19) Which method is used on a commercial scale instead of extraction using animal fats? A) Extraction with organic solvents B) Distillation C) Extraction by pressure or grated D) Extraction using animal fats 20) Examples of flowers that can be separated using the volatile organic solvent method “Cold extraction” A) Daffodils and jasmine  B) Roses and lilies C) Sunflowers and dandelions D) Tulips and orchids 21) How long do the flowers remain naturally alive in the case of Cold extraction method? A) 1-3 hours B) 1-3 days C) 1-3 weeks D) 1-3 months 22) Example of flowers thar require Hot extraction for its essential oil, is… A. Rose B. Lavender C. Acasia D. Jasmine 23) Temperature range used for heating the fat in case of using the Hot extraction method A) 20-30ºC B) 40-50ºC C) 60-70ºC D) 80-90ºC 24) The purpose of repeating the process of hot extraction several times, is… A) To increase the yield of the essential oil B) To make the essential oil more aromatic C) To remove impurities from the fat mixture D) To prevent the flowers from getting overheated 25) Method that’s used to extract aromatic oil from citrus fruits, is…. A) Hot extraction B) Cold extraction C) Pressure or grated D) Distillation 26) Part of the citrus fruits contains the aromatic oil, is… A) The peel B) The pulp C) The seeds D) The juice  Aromatic plant Lecture 6 Part 1 1-Leaves,herbs and flowers are dried at………………. A)20 – 40 C B)30 – 50 C C)30 – 60 C D)20 – 60 C 2-Roots &Peels are dried at …………. A)20 – 40 C B)30 – 60 C C) 20 -60 C D)30 – 50 C 3-The purpose of drying is ……………. A)preservation and stabilization of medicinal contents B)Not facilitating the grinding process c)increasing size and weight d)A&C 4-…………… are stands with a height of `150 cm to 200 cm. A)Drying racks B)Drying methods C)Drying rooms D)Drying devices 5-……………from biological factors A)Humidity B)Vermin C)Air D)Light 6-…………from chemical physiological factors A)Fungus and bacteria B)insects C)Temperature D)Vermin 7-In general,medicinal plant materials withstand temperatures between ……………for long periods without decomposition. A)20 -30C B)20 -40C C)20 -35C D)20 -25C 8-……………… is repeated two or three times every two weeks A)Fumigation process B)storage process C)photosynthesis D)Oxidation process 9-fumigation of plant materials in sealed places or with materials such as…….. A)Chloroform B)cabrit disulfide C)carbon dicholoride D)cyan ate 10-……….. is last stage in the production of medicinal plants A)Oxidation process B)storage process C)photosynthesis D)fumigation process 11-Humidity should not keep more than 6% moisture so as ………….. A)encourage the growth of fungus and bacteria B)not encourage the growth of fungus and bacteria C)inhibition of enzymes D)oxidation process 12-……….affects the growth of fungus and bacteria. A)Light B)Humidity C)Low temperature D)High temperature 13-Materials containing volatile components are stored in ………. A)room temperature B)freezer C)refrigator D)airtight containers 14-Insects are resisted in storage by……… A)heat or fumigation B)light or fumigation C)humidity or fumigation D)air or fumigation 15-plant material should not be exposed too much to……..because this may affect the color. A)temperature B)light C)air D)vermin 16-……….from mineral impurities A)Presence of other parts of same plants B)presence of parts of glass,stones &metales C)presence of fungus, mold,insects,or vermin secretion D)presence of parts of other plants with main plant 17-………from organic impurities A)Presence of grains of sand B)presence of parts of glass,stones &metals C)presence of fungus, mold,insects,or vermin secretion D)Some other soil component 18-Plant material should be packaged that don’t allow mice or other ………to contaminate it &lose its commercial value. A)Light B)vermin C)humidity D)Temperature 19-One of the reasons for the decomposition of plant materials in the store.it is ……… A)Chemical agents B)Chemical physiological agents C)Biological agents D)Physiological agents