Test your basic knowledge |

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Alternate between sporophyte and gametophyte in the plant life cycle






2. Produce vessels in spring and tracheids in winter (ex. oak tree)






3. Part of leaf that is loose for easy gas diffusion






4. Mycorrhizas and the bubble shaped guys






5. Position leaves for max photosynthesis - provide resource transportation and storage - escape herbivores






6. 1. Prokaryotes are approximately the same size as their organelle counterparts. 2. Double membrane 3. Chloroplasts and mitochondria have their own unique circular DNA






7. Provide oxygen - food - medicine - fuel - shelter - paper products - beauty






8. Organic molecules (materials) - enzymes (workers) - DNA (blueprint)






9. Increase population fitness in unstable environments






10. Root hairs capture water and minerals and move them through (symplasticly) or between (apoplasticly) cells until the endodermis filters it into the vascular tissue






11. A simple compound whose molecules can join together to form polymers






12. Part of calvin cycle where five G3Ps are recycled - processed - and linked to form more materials for carbon fixation






13. Convert light energy to chemical energy






14. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid






15. Part of calvin cycle where ATP and NADH are turned into G3P (sugar)






16. Waxy protection of leaf to protect from pathogens and let water run off it






17. Increase width (girth) of stems and roots - has vascular cambium and cork cambium






18. Organic compounds not directly involved in normal growth of organism. Facilitates reproduction and defense against predators.






19. Haploid - produces gametes through mitosis






20. When xylem is blocked by air bubbles as a result of gasses clotting together after freeze-thaw cycles or extreme water-tension






21. A thin membrane around the cytoplasm of a cell - gatekeeper of the cell






22. Made of cellulose - structure and inter-cellular transportation of nutrients via plasmodesmata.






23. Synthesize proteins based on mRNA code






24. Produces microgametophyte that stays with sporophyte plant (produces egg)






25. Produces secondary vascular tissue






26. CO2 (exhale) + H20 + ATP (energy) ? CH20 (food) + 02 (air)






27. Rigid support - mostly found in bark. two types -- fibers and sclereids






28. Part of calvin cycle where ATP and NADH are created






29. Free energy in reactants stored in products (carbs)






30. Number of ATP molecules from 1 glucose in cellular respiration (total produced -- 38 - total yield -- 36)






31. Consists of dead hollowed out cells - come in tracheids (long) or vessels (short) - move water in plant






32. Inter-cellular links for long distance transportation of nutrients






33. The atmosphere is 21% oxygen - so that inherently means that over time plants have taken in more CO2 than they produce. this must be the case - otherwise we would all be dead.

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34. Change root structure entirely - make little bubble roots to help acquire nitrogen and phosphorous in exchange for sugars






35. Comes in twos - sieve tubes (no nucleus) and companion cells (nourish sieve tubes) - transport sugars and nutrients






36. Cytoskeleton -- motor proteins carry molecules and organelles across microtubule tracks






37. Large compound formed from combinations of many monomers






38. Diploid - produces spores through meiosis






39. Attach themselves to other plants and suck nutrients out of the air (fog - humidity)






40. More effective in stable environments - focus on fast growth without competition






41. Stores water and waste and ultimately determines the shape of the cell






42. Special leaves that act as arms that pull up or support the stem






43. Ability crucial to plant structure and processing of energy - allows change to be made to help survival






44. Cell walls of cellulose - photosynthesis - indeterminate growth - asexual and sexual reproduction






45. Practice of employing management strategies to allow healthy return of timber harvest. (ex. leave mature trees - plant seedlings)






46. Root apical meristem (quiescent center - or zone of cell division) - zone of elongation - zone of maturation






47. Position reactants so they dont require as much activation energy






48. Make long thin stems called 'runners' that grow above ground and aid in asexual reproduction






49. Indeterminate growth - assisted reproduction - protection (chemical deterence - spikes - internal resource transport)






50. Attached directly by the base