MCQs Botany-4 Posted on 2023-09-172024-11-08Author admin 0 MCQs Botany-4 Multiple Choice Questions (MCQs) for Test Preparation Botany, Plant Sciences 1. Plants can obtain nitrogen from the atmosphere through a process of ____________ Transpiration Nitrification Denitrification Nitrogen fixation 2. ___________ are plant structures, responsible for producing new cells Phloem Root hair Xylem Meristem 3. ____________ type of plants can have the lowest water use efficiency C4 CAM C3 Xerophytes 4. ____________is major storage carbohydrate in seeds Starch Cellulose Glycogen Arginine 5. _________ is the mutualistic relationships between fungi and the roots of plants Lichens Mycorrhizae Mutualism Commensalism 6. Chromosome number (2n) of Oryza sativa 12 14 42 24 7. _________ is the process of growing plants in a specific shape or form Thinning Pruning None of these Training 8. _________ is study of trees Dendrology Forestry Plant Science Forest Ecology 9. ____________ is the hormone responsible for apical dominance Gibberellins Auxin Abscisic Acid Ethylene 10. Excessive exposure to UV radiation can cause damage to ____________ Cell Membrane Cytoplasm DNA Cell Wall 11. Loss of water through stomata is called ___________ Guttation Evaporation Run off Transpiration 12. ____________ is the water exuded by plants, usually during overcast nights, under warm and moist soil conditions Guttation Dew Relative humidity Fog 13. Chromosome number (2n) of Wheat (Triticum aestivum) 42 14 12 24 14. Imaginary lines running parallel to the equator is ___________ None of these Altitude Latitude Longitude 15. Conversion liquid form of water to gaseous form, from any surface is called ___________ Transpiration Evaporation Run off Guttation 16. Rapid breakdown of enzymes can occur due to high ___________. Rain Temperature Fog Moisture 17. ____________ is the study of plant pollen, spores and certain microscopic plankton organisms in both living and fossil form Paleobotany Permafrost Phytogeography Palynology 18. ____________is the water uptake for resumption of metabolic activities in seeds Imbibition Osmosis Dehiscence None of these 19. Chromosome number (2n) of Oats (Avena sativa) 42 24 14 12 20. The embryonic root that emerges first from the seed coat is ____________ Hypocotyl Coleoptile Cotyledon Radicle Loading …