Plant Biology Test 3
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The o2 produced as a byproduct of photosynthesis comes from
splitting water molecules
during the light-dependent reactions of photo synth, the formation of NADH from NADP+ and a hydrogen ion occurs in association with
Because the first detectable product of the Calvin cycle is ___, the cycle is also known as the ___ pathway.
photorespiration is more likely to occur in C3 plants when ____
o2 is more abundant in intercellular spaces in leaf tissue than in CO2
in the C4 pathway, the enzyme PEP carboxylase
- reacts CO2 w/ phosphoenolypyruvate
- produces oxaloacetate
- works more efficiently at temperatures above 30C
In CAM plants, malate formed as the end product of CO2 fixation in the dark is stored as malice acid/malate in the ___ of mesophyll cells
Although the vasc cambium produces as many x cells as p cells / growing season, fewer p cells are apparent in woody stems b/c...
the oldest phloem cells are shed as bark
trees growth rings are lines that appear in...
the xylem tissue, marking where the vasc camb stopped growing one year and started the next
In mature trees, most of the cells in the interior of the trunk are ___
non functioning xylem cells
what stimulates proper growth of fleshy receptacle that makes what we see as strawberry fruit?
gibberellins are used in grapes for...
- keep grapes on vines until harvesters can pick
- increase size of clusters
defoliants stimulate cotton plants to produce ___, a hormone associated w/ signaling plant to drop leaves.
what are man climatic factors affecting the distribution of biomes
the temperate deciduous forest biome
has precipitation evenly distributed throughout the year
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