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Why are there more stoma on the undersides of leaves than the top?
Wiki User
∙ 11y ago
The upper surface of the leaf is (generally) covered by a waxy layer called the cuticle, this is not a living layer, making it particularly hard for stoma to operate on the upper surface.
Additionally, the upper surface of the leaf is more exposed (direct sunlight and wind) meaning that rate of evaporation would be increased.
Interestingly enough some species of plants when propagated in tissue culture do actually form stoma on the upper surface of the leaf, as there is no cuticle present.
Wiki User
∙ 11y ago
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What do stomata look like?
"Stoma" comes from Greek, meaning: mouth. It usually indicates openings, sometimes other than mouths. A stoma is a surgically created opening on the abdomen which allows stool or urine to exit the body. Stoma is also the name for small openings on the underside of leaves that facilitate transpiration.
Why does grass have more chlorophyll than pines?
Because a pine is deciduous, which means it doesn't drop it leaves in winter.
Do large leaves lose more water during transpiration than smaller leaves?
not necessarily . It depends upon the type of the plant,its environment, availability of water etc . certain plants (especially desert plants) have a waxy coating on their leaves to prevent water loss. Even though they have larger leaves their waxy coating prevents the loss of water than the plants having smaller leaves in the tropics.
Why is the underside of the leaves is a paler green than the top?
In general leaves that are on the inside portion of a plant (or even a leafy vegetable) are paler as they are not exposed to the high light levels that externally facing leaves are. Sometimes they try to compensate for this and may be generally larger than outer facing leaves
What is the basis for each grouping in the leaves?
Plants with similar shaped leaves are more likely to belong to the same family, than otherwise. Are the leaves simple or branched, toothed or spikey, with hairs or not. And whether the veins are simple and parallel, or branched or joined. Are the leaves opposite each other on the stem, or on alternate sides. And similar properties.
How do leaves grow on a eucalyptus tree?
The leaves of eucalyptus trees, or gum trees, grow hanging down, rather than horizontally. This is a special adaptation which minimises evaporation and hence water loss (transpiration), as the leaves are not as exposed to sunlight. The leaves usually have equal numbers of stoma on each side, unlike trees which hold their leaves horizontally - they tend to have all or most of their stoma on the lower side. The leaves also tend to have a thick, waxy coating which also minimises water loss.
How does the ghost gum survive?
The ghost gum is a species of Eucalyptus, and Eucalyptus trees are specially adapted to the dry Australian conditions. Ghost gums have wide, spreading canopies which redirect the limited rain that falls down the trunk to concentrate around the roots. The leaves of a ghost gum tree hang down, rather than horizontally, minimising evaporation and hence water loss (transpiration), as they are not as exposed to sunlight. The leaves usually have equal numbers of stoma on each side, unlike trees which hold their leaves horizontally - they tend to have all or most of their stoma on the lower side. The leaves also tend to have a thick, waxy coating which also minimises water loss. Ghost gums have characteristically white or grey trunks, which is more likely to reflect the sunlight, rather than absorb the sunlight like other species in more bushy areas do.
Can a tree have million leaves?
Yeah they can have more than that!!
Does a plant with green leaves make more food than a plant with purple leaves?
Yes
A leaf having more than one blade on the petiole is said to be what?
Leaves
What do stomata look like?
"Stoma" comes from Greek, meaning: mouth. It usually indicates openings, sometimes other than mouths. A stoma is a surgically created opening on the abdomen which allows stool or urine to exit the body. Stoma is also the name for small openings on the underside of leaves that facilitate transpiration.
Why does celery with leaves absorb more water than celery without leaves?
most plants absorb more water through their leafs
Why do plants loose more water than it is absorbing from the soil?
Plants loose more water than they absorb from the soil due to a process called transpiration. is the evaporation of water into the atmosphere from the leaves and stems of plants. Plants absorb water through their roots and this water can originate from deep in the soil. (For example, corn plants have roots that are 2.5 meters deep, while some desert plants have roots that extend 20 meters into the ground). Plants pump the water up from the soil to deliver nutrients to their leaves. This pumping is driven by the evaporation of water through small pores called stomates, which are found on the undersides of leaves. Transpiration accounts for approximately 10% of all evaporating water.Read more: Why_do_plants_loose_more_water_than_it_is_absorbing_from_the_soil
Which arrangement of leaves has more than two leaves in a circular pattern around the stem at every node?
whorled.
Why are leaves lighter in the sun than in the shade?
The magic of more light.
Does leaves help plants in more than one way?
yes
Two words found in the word mathiston?
math & ton without rearranging the letters.otherwise: hoistman, months, hitman...More answers: maths, stoma, this, his, than, atom(s), stain
