BIO 452 - quiz 1 real exam questions with well detailed 100% Correct answers

Principles in Plant Physiology. Which of the following is FALSE? -optimizing all functions are possible in plants -Morphology and physiology are linked -Plants are facing a lot of challenges -Plants are dynamic biological systems -Plants are shaping the environment - correct answer Optimizing all functions are possible in plants Which of the following is a FALSE comparison between the xylem and phloem: -Xylem vessels are usually larger than phloem sieve tubes -Xylem supplies water to the leaves; phloem transports food from leaves to the rest of the plant -Xylem cells are at risk of exploding from high positive pressure; phloem cells do not fail -Water is "pulled" through the xylem; sugar solutions are "pushed" through the phloem - correct answer Xylem cells are at risk of exploding from high positive pressure; phloem cells do not fail Three major tissue systems make up the plant bodies do NOT include: -Ground tissue -Vascular tissue -Support tissue -Dermal tissue - correct answer Support tissue true/false: physiological processes are usually not linked with each other. - correct answer false true/false: thick, dense, and compact leaves usually have high photosynthetic rate compared to thin, less dense, less compact leaves - correct answer false The function of above-ground buttress (wall-like) roots in tropical trees is: -To stop animal moving and attacking trees -To provide more surface area for water and nutrient uptake -To physically support the tree -To have more xylem for water uptake - correct answer to physically support the tree Which one of the following is NOT a function of stems? -communication between leaves and roots -elevate reproductive structures -exclude unwanted nutrients -support leaves -transport water and sugar - correct answer exclude unwanted nutrients What is the function of the Casparian strips in roots? -water transport -has no function -exclude unwanted nutrients -physical support - correct answer exclude unwanted nutrients What is the major function of the parenchyma cells in the cortex and pith? -photosynthesis -transport -storage -support - correct answer storage Why the leaf spongy mesophyll tissue has a lot of air spaces? -to allow carbon dioxide to diffuse quickly -to facilitate light penetration -to save energy from have more cells to allow water storage - correct answer to allow carbon dioxide to diffuse quickly Why the leaf palisade mesophyll tissue has a compact columnar arrangement? -to have more cells for photosynthesis -to have more cells for sugar storage -to maximize light interception -to use the space more effectively - correct answer To maximize light interception Which one of the following is not a Macronutrient element of plants? -K -N -P -Fe - correct answer Fe The major function of a thick plant cell wall in xylem conduit and fiber cells is: -water storage -physical support -protecting cell membrane -communication - correct answer physical support true/false: the guard cells of the stomata usually do NOT have chloroplasts - correct answer false true/false: Plant growth is limited by the resource in highest supply relative to plant needs. - correct answer false Why do vascular plants have to 'pull hard' to bring water from the soil to the leaves? -water is held by capillarity in the spaces between soil particles and plants must overcome this force to get the water out of the soil -moving water through the 'pipes' of the xylem creates frictional resistance that the plants must overcome -plants must lift the water against gravity -all of the above - correct answer all of the above which one is the major source of plant dry biomass accumulation through photosynthesis -air -soil -light -fertilizer - correct answer air Which one of the following is NOT a regular step of scientific research in modern science? -formulate a question -develop hypotheses -design experiments -observe and record data -analyses -share results -none of the above - correct answer none of the above Which one of the following is the best scientific hypothesis: -warming will decrease photosynthesis of wild blueberry plants in Maine because they are adapted to cool temperatures -plants can not adapt to climate change quickly because the climate change is too fast nowadays -crops will not be influenced by changes in rainfall patterns -temperate trees have slow responses to climate change - correct answer warming will decrease photosynthesis of wild blueberry plants in Maine because they are adapted to cool temperatures Which one of the following in NOT correct regarding a scientific hypothesis: -the hypothesis should be based on current knowledge, and logical reasoning -a scientific hypothesis could be a simple prediction without any background information -a scientific hypothesis should be specific so one can design an experiment to test it -for a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it - correct answer a scientifi