Posted on June 5, 2024 by Endalkachew BayePlant Sc 31 126 12345678910111213141516171819202122232425262728293031 Plant Sc 31 Sample Name of StudentID NumberModality (egular, Extention or Weekend)Phone Number 1 / 31 1. Mostly disease-free plants in plant tissue culture can be obtained through____________ A. Meristem Culture B. Anther culture C. Embryo rescue D. Shoot bud regeneration Multiple Choice 2 / 31 2. ____________ is the genetic variability generated during tissue culture. A. Organogenesis B. Somaclonal variants C. Somaclonal variation D. Micropropagation Multiple Choice 3 / 31 3. Which of the following is naturally occurring auxin in plants? A. IBA B. 2,4-D C. Zeatin D. IAA Multiple Choice 4 / 31 4. ___________ are termed as structure less, weak, moderate, strong and very strong depending on the stability of the aggregates when disturbed. A. Grade B. All C. Class D. Type Multiple Choice 5 / 31 5. The production of adventitious roots and shoots from cultured cells, tissues and organs is called_______________. A. Micropropagation B. Organogenesis C. Callus culture D. Suspension culture Multiple Choice 6 / 31 6. Which one of the following is true about grain? A. Grain should be viable B. Grain may not be used for sowing C. Grain may or may not have life D. Grain should have maximum genetic and physical purity Multiple Choice 7 / 31 7. One of the following is not Factors affecting weed-crop interference A. dormancy B. Period of weed growth C. Plant species effects D. Weeds /crop density Multiple Choice 8 / 31 8. ____________is a weed whose introduction is likely to cause economic or environmental harm to human health. A. Native weed B. Aquatic weed C. Parasitic weed D. invasive weed Multiple Choice 9 / 31 9. In which situation does Crop Water Requirement decrease? A. Plant with large leaf area B. High humidity C. Plant with dense root system D. High temperature Multiple Choice 10 / 31 10. Which one is not true about photosynthesis? A. Sunlight is converted into chemical energy B. Carbon dioxide is converted into sugar C. Water is split into oxygen. D. Chemical energy is converted into sunlight. Multiple Choice 11 / 31 11. Genetic purity of seeds refers to? A. Seed germinability B. Seed moisture test C. Physical purity of seed D. Trueness to type Multiple Choice 12 / 31 12. Solution with similar concentration as that of the cell sap. A. Isotonic solution B. Plasmolysis C. Hypotonic D. Deplasmolysis Multiple Choice 13 / 31 13. The large (bulk) reservoir of viable seeds in the soil is called A. Seed dormancy B. Seed viability C. Seed germination D. seed bank Multiple Choice 14 / 31 14. 1. The movement of the vegetable from the farm gate to an accessible area for the consumers is known as—– A. Storing B. Marketing C. Processing D. Harvesting Multiple Choice 15 / 31 15. ………is cavity between the two membranes of each thylakoid. A. Lumen B. Stroma C. Grana D. None Multiple Choice 16 / 31 16. Serious disease of vegetable seedlings at nursery level is— A. All B. Fusarium wilt C. Black rot D. Damping off E. Downy mildew Multiple Choice 17 / 31 17. Which one is wrong about C4 Photosynthetic Cycle? A. C4 leaf has one distinct chloroplast containing cell. B. The C4 cycle involves two carboxylation reactions. C. The first product in this carbon fixation cycle is oxaloacetate. D. C4 leaf has two distinct chloroplast containing cell. Multiple Choice 18 / 31 18. Which gene transfer technique involves a tiny needle which is used to inject DNA into a cell lacking that DNA? A. Microinjection B. Lipofection C. Electroporation D. Particle gun Multiple Choice 19 / 31 19. Irrigation depth is_______ A. Amount of water that can be applied in one irrigation B. Ground water C. Field Capacity D. Time gap in day’s b/n two successive irrigation applications Multiple Choice 20 / 31 20. __ is the period of the resumption of growth of a seed or a vegetative part of the weed after a short /long period of rest. A. dissemination B. Reproduction C. dormancy D. germination Multiple Choice 21 / 31 21. From the following which activities does not practiced after transplanting? A. Watering B. Cultivation C. Hardening off D. Pest control E. Fertilization Multiple Choice 22 / 31 22. One of the following is not true Critical period of crop-weed competition A. The shortest life span in life cycle crop when weeding will result in the highest economic returns B. It is span of time between that period after seeding C. The time interval when it is essential to maintain a weed-free environment. D. The period at which Minimum crop weed competition occurs. Multiple Choice 23 / 31 23. What types of bed can be used in areas of low rain fall? A. Sunken bed B. Flatted bed C. Try D. Raised bed Multiple Choice 24 / 31 24. Irrigation Interval can be increased _______ A. As sunlight duration shortens. B. As temperature decreased C. As rained D. As humidity decreased Multiple Choice 25 / 31 25. Which one of the following is used for the in vitro development of haploid plants? A. Androgenesis B. Micropropagation C. Embryogenesis D. Organogenesis Multiple Choice 26 / 31 26. The following activities done at nursery in order to provide the optimum level of seedling density. A. Thinning B. Transplanting C. Weeding D. Hardening off Multiple Choice 27 / 31 27. The process in which two or more adjoining somatic protoplasts fused without any inducer is called as ______________ fusion. A. Somatic cell B. Protoplast C. Spontaneous D. Induced Multiple Choice 28 / 31 28. _________ is an immature plant from which a new plant will grow under proper conditions? A. Testa B. Cotyledons C. Endosperm D. Embryo Multiple Choice 29 / 31 29. A science which deals with the production of fruits like mango, papaya, avocado, etc. is known as—- A. Pomology B. Arboriculture C. Olericulture D. Floriculture Multiple Choice 30 / 31 30. Which one of the following is not true about water? A. None B. Soil solution should have a higher water potential as compared to root hair cell, then only water will enter the root hair cell. C. Root hair is a specially modified epidermal cell for absorption of capillary water of the soil. D. Major portion of water required by plants is absorbed by roots. Multiple Choice 31 / 31 31. —— is an effective method of transport of matter over short distances. A. Diffusion B. Permeability C. Isotonic solution D. Osmosis Multiple Choice Your score is 0%
