What is the photosynthetic rate between deciduous and non-deciduous plants?

Question

i really don't knoe where to start, so if you have the answer, can you please explain why and how, too?
please, no "I dunno" s. i really need help!

Answer 1

Rate of photosynthesis depends on growth rate of plant. so rate of photosynthesis in evergreen plants/trees is slower than those of decidous plants (Annuals, biennials). However, you can find photosynthetic rate values ranges (10-35 u mol CO2 m-2 s-1; depending upon the type of species and plant C3 or C4 or CAM) of decidous plants, while you can find values 2-8 u mol CO2 m-2 s-1 depending upon species (coniferous trees have 2-4 value and other trees have 7-10 u mol m-2 s-1 when growing under normal conditions). However, under stress conditions (Cold stress, salt stress, heat stress, waterlogging, and other biotic stresses) rate of photosysnthesis may further decline.

For further assistance you can see
M Pessarakli . 2005 Handbook of Photosynthesis. 2nd edition Tailor and Francis Publishers, USA

or may contact David Lawlor at UK, Authority in Photosynthesis

I hope it will works

Habib Athar

Answer 2

you ought to be asking the version between an evergreen and a decidious plant, using fact coniferous and evergreen are not a similar. All DECIDIOUS vegetation drop their leaves whilst the seasons replace and flow into dormancy till the buds rebreak interior the spring. EVERGREENS carry onto their leaves year-around. A holly tree, a yew, Southern Magnolia are examples. A CONIFEROUS tree is a tree that produces it extremely is seed in a cone. Pines, spruce, firs..etc. a number of those bushes will carry onto their previous needles for a pair of years, yet they sometimes shed them over an prolonged volume of time. So it extremely is not noticable like a decidious leaf drop. There are additionally conifers that are decidious: Bald Cypress, Larch, or break of day Redwood are examples. wish this clears up some confusion. human beings tend to think of Coniferous=evergreen it extremely is fake.

Answer 3

Deciduous and coniferous trees differ in that during cold winters, the leaves on deciduous plants change color and eventually fall off the tree. However, many coniferous trees are not affected by the cold in this manner. We hypothesized that deciduous plants lose leaves and become dormant during the winter months in order to conserve energy. However, coniferous plants remain active even during cold months when the amount of solar radiation available for photosynthesis is reduced due to the incident angle of the sun’s rays. We predicted that photosynthetic rate in deciduous leaves would decrease when exposed to cold temperatures, while the rate in coniferous plants would remain close to that observed at room temperature. We placed three grams of deciduous and coniferous leaves into separate containers to which a CO2 probe was attached. The CO2 probe was connected to a Macintosh computer and data were recorded using Logger Pro software. White lights were placed on both sides of the container and change in CO2 over 15 minutes was recorded. We tested both leaf types at room temperature and at 2 degrees C by maintaining the test bottle in ice water. Rate of CO2 change for deciduous leaves at room temperature was —9.87 ppm/min/g and at 2 degrees was 11.01 ppm/min/g. For the coniferous leaves, the results were 2.80 ppm/min/g at room temperature and — 4.57 ppm/min/g in the cold trial. A net decrease in CO2 indicates that CO2 is being utilized more rapidly for photosynthesis than it is being produced in respiration. Our results are consistent with our initial hypothesis. At room temperature deciduous leaves consumed more CO2 than was produced. However, at 2 degrees, the increase in CO2 indicates a reduced rate of photosynthesis. Interestingly, the colder temperature seems to have facilitated consumption of CO2, and thus photosynthesis, in the coniferous leaves. One potential problem with our experiment is that the cold trials were performed with the bottle submerged in ice water, while the room temperature trials were not. The water may have affected the amount of light reaching the leaves and this could account for the results seen in the deciduous leaves. In addition, replicates of each trial with new leaves would allow for statistical comparison to see if the differences we measured are significant.

I hope this helps

Answer 4

there must be more factors then merely deciduous or not?