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WorksheetsAGR3506 - QUIZ 3 (TEMPERATURE)
Total questions: 16
Worksheet time: 15mins
The difference in temperature of the temperate and tropical regions are affected by
the amount of rainfall
angle of solar radiation
90-degree angle of the earth axis
amount of solar radiation received
why does the photosynthesis rate reduce at high temperature?
enzymes are not efficient at these temperatures
the CO2 content reduces
respiration does not occur
enzyme lost its shape and not functuning well
this graph shows that:
temperature increases CO2 level for photosynthesis
supplying more CO2 can increase the photosynthesis rate even at higher temperature
increasing temperature will increase the assimilation rate at a certain temperature limit
the photosynthesis in ambient co2 is better than saturating co2
which statement is TRUE about respiration
a process to produce food in plants and uses energy
a process that converts sugar for energy
release oxygen in the presence of light
utillize co2 and light as a source of energy
glycolysis and Kreb cycle are processes in
photosynthesis
aerobic respiration
protein synthesis
light reaction
temperature affects respiration by
increasing respiration as temperature decreases until optimum temperature
increasing respiration as temperature increasing until optimum temperature
lowering the respiration at optimum temperature
a stable rate of respiration as temperature increases
transpiration is
absorption of water through leaf
loss of water through the leaf surface
loss of water through roots
loss of water through ground surface
what is the name of this cell?
stomata
guard cell
nucleus
vacuole
what condition causes the cell to close as shown in B?
the high amount of water wanted to get in the leaf, so it is close to avoid overwatering
the water is adequate so the stomata close to avoid water loss
the stomata to close due to low water
high temperature causes the stomata to close
how does heat stress affect plant seed during germination?
high heat reduce photosynthesis
heat stress increase abscisic acid
heat stress reduce respiration
heat stress reduce photosynthesis
what is the effect of increase in abscisic acid in seed germination?
no effect on seedlings
inhibit seed germination
improve normal seedling growth
elongate seedling stems
which of the following substance that induce oxidative damage to plants during heat stress?
carbon dioxide and sugar
reactive oxygen species
deoxyribonucleic acid
chlorophyll and phytochrome
stress due to temperature can be divided into :
heat
ambient
chilling
freezing
a stress condition when the temperature falls below 0 C
ambient
heat
freezing
chilling
how does low temperature affects plants?
plants can be grown in any temperatures without detrimental effects
all plants will grow well in low temperature (below 10C)
plants grow slowly under cold temperature
photosynthesis rate is unaffected during cold temperature
this graph shows that:
the photosynthesis is the same for all types of plant system
photosynthesis rate is different for each plant system and optimum temperature range
the optimum temperature (Topt) for C4 is the lower than C3
CAM plants have a more efficient photosynthesis rate compared tp C3 and C5
