i need help?

Question

hello i was wondering if you knew the answer to this :
Which of the mesophyll cells would you expect to contain more chloroplasts – the palisade mesophyll or the spongy mesophyll? why would you expect this? thank you so much :D......

Answer 1

Palisade Mesophyll (tightly packed cells on the upper surface)
contain three to five times as many chloroplasts as those of the spongy parenchyma.
You would expect this because it is closer to the light source -
ie. the sun.
More on leaf structure at:
http://www.uic.edu/classes/bios/bios100/lectf03am/lect10.htm

Answer 2

the palisade mesophyll has more chloroplasts here is a detailed report of the both:

The palisade mesophyll
The palisade mesophyll consists of one or several layers of elongated, narrow parenchyma cells with their long axes at right angles to the axis of the leaf and are situated under the adaxial epidermis. Chloroplasts are especially concentrated in the palisade mesophyll and it is in these cells that much of the photosynthesis in a tree takes place.



The spongy mesophyll
The spongy mesophyll consists of irregularly shaped parenchyma cells which are located between the palisade mesophyll and the abaxial epidermis. Spongy mesophyll cells contain less chloroplast than the palisade mesophyll cells but photosynthesis take place in these cells as well. There are many intercellular air spaces between the spongy mesophyll cells which are interconnected and communicate with the stomata of the abaxial epidermis. This allows the food-producing cells of the leaf (the mesophyll) to access the gases (carbon dioxide - CO2 and oxygen - O2) which they need for photosynthesis and respiration

Answer 3

Palisade mesophyll contains more chloroplast than spongy mesophyll. palisade mesophyll are also known as palisade cells.
Palisade cells show various adaptations: first, their cylindrical shape, which allows maximum absorption of light by chloroplasts. Second, these cells produce carbohydrates in greater quantities than are needed by each cell; these carbohydrates are fed into a wide variety of metabolic pathways and are vital to the functioning of the plant. Third, the palisade mesophyll contains the largest per-cell number of chloroplasts in the plant; usually positioned towards the upper surface of the leaf in order to harness the greatest amount of energy possible.

Palisade cells are placed near the top of a leaf, in order to maximise the amount of light absorption. This is why, the top of a leaf is often darker than the bottom.
Beneath the palisade layer is the spongy layer. The cells of the spongy layer are more rounded and not so tightly packed. There are large intercellular air spaces. These cells contain less chloroplasts than those of the palisade layer.

Answer 4

Marina,
No doubt that palisade mesophyll cells contain more chloroplasts.
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bye da,

Answer 5

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u r scaring me


i failed 5 times in 8th grade


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Answer 6

I dont know about this but i can help u pls try the below site:

http://en.wikipedia.org/wiki/Mesophyll_cell#Mesophyll
http://en.wikipedia.org/wiki/Palisade_cell

Answer 7

Do u hav a fat pumpum ???

Answer 8

sorry i don't know biology