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