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At night, there is no light, therefore no photosynthesis (which is the process of making energy from light). Photosynthesis uses CO2, however since photosynthesis is not occurring at night, there is no need to acquire CO2.
Some plants (CAM plants) only open their stomata at night, however, in order to take in CO2 and store it until it is light and they can use photosynthesis then. This helps to eliminate water loss through the stomata which would occur more rapidly if the stomata were open during a hot day. (therefore, most CAM plants are found in desserts and such)
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoSome Stomata close at night because of the heat, while others open at night because of the moisture. CAM plants such as cacti and pineapple open their stomata at night so that the moisture in the air can be absorbed. CAM plants are adapted to hot, dry environments such as deserts, so opening at day would just evaporate any water that the plant had absorbed. So CAM plants open at night and close at day, while plants adapted to environments such as the ones in forest open at day and close at night.
Wiki User
∙ 14y agobecause there self concious
its because stomata are responsible for transpiration and they prevent excessive water loss at night by closing themselves. also stomatal movement is influenced by light. presence of light opens them and absence closes them.other factors also influence stomatal opening and closing like gaseuos exchange.
Wiki User
∙ 9y agoThe stomata are tiny openings found in the leaves of plants that allow the passage of carbon dioxide into the plant cells. The stomata close at night to avoid water loss.
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∙ 12y agobecause plants only photosynthesis in the day time.
Wiki User
∙ 11y agoStomata close at night as the plant only transpires during the day and stomata are part of the transpiration process.
Wiki User
∙ 12y agobecause plants don't photosythysise at night.
Improved answer: Because there is no light at night time for plants to photosynthesis
Wiki User
∙ 12y agoduring night time transpiration does not takes place so there is no need to open the stomata
Wiki User
∙ 12y agoGenerally,the stomata of a leaf are open when exposed to light and remain opened under continuous light.when darkness retruns,the stomata are closed
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CAM plants close their what during the day and open them at night?
Cam plants close during the night and open during the day because they are photosensitive and respond to light. To do it experimentally, try with a torch for some time.
What is the refference of why is it that only plants can photosynthesize?
As well as plants, some bacteria also photosynthesize, though they use a different chemical process. Some plants use different photosynthetic mechanisms, known as C3, C4, and CAM. The latter mechanism is used by plants (such as some 'perching plants') that may have a water conservation problem. These plants open their stomata at night to take in CO2, and dissolve that in a specific chemical. During the day, they close their stomata to conserve water, and process the stored CO2 to produce sugars, etc.
How do plants breathe at night when the stomata closed?
As humans plants also need oxygen to breathe they only take in carbon dioxide to do photosynthesis.So they wont do photosynthesis at night and so they only need to breathe. even though their stomata are closed at night some oxygen can go inside. and this is how plants breathe when their stomata are closed. pipidipo
What guard cells guard?
They are the pair of cells that surround the stomata (pores on the underside of leaves) They can change shape to open or close the stomata. Most plants open their stomata during the day (to allow co2 to enter for photosysthis) and close them at night. However cacti open their stomata during the night to reduce water loss, and have to use stored co2 for photosysthesis.
What are the pores on leaves called?
These are known as stomata - pronounced stoh-muh-tuh ; the singular form is stoma.The are generally found on the underside of the leaves and sometimes along the stems; theyallow for gaseous exchange between the leaf and the atmosphere. Carbon dioxide in and water vapour and oxygen out (transpiration).They are normally on the underside of leaves as the waxy cuticle covers the upper epidermis; strangely some plants that are grown in tissue culture have stomata on both leaf surfaces, as a cuticle does not develop until the tissue culture plantlets are exposed to an open environment (and ultraviolet light).Plants growing in arid areas have fewer stomata to reduce transpiration where as plants in tropical areas have large or many stomata to take advanatge of the ideal growing conditions.
CAM plants close their what during the day and open them at night?
Cam plants close during the night and open during the day because they are photosensitive and respond to light. To do it experimentally, try with a torch for some time.
Why do some plants open their stomata by night instead by day?
Very few of them do open at night -- In most green plants the stomata are only open during the day. They allow carbon dioxide to reach the cells where the majority of photosynthesis takes place. As they also allow transpiration (water loss) the stomata of most plants close during the night when photosynthesis is not possible. There is a group of mainly desert plants known as CAM plants. These carry out a process called Crassulacean acid metabolism, which effectively allows them to store carbon dioxide in their leaves. In these plants the stomata are normally closed during the day to prevent water loss when temperatures are high, and open during the night when temperatures are lower.
What is the refference of why is it that only plants can photosynthesize?
As well as plants, some bacteria also photosynthesize, though they use a different chemical process. Some plants use different photosynthetic mechanisms, known as C3, C4, and CAM. The latter mechanism is used by plants (such as some 'perching plants') that may have a water conservation problem. These plants open their stomata at night to take in CO2, and dissolve that in a specific chemical. During the day, they close their stomata to conserve water, and process the stored CO2 to produce sugars, etc.
How does CO2 get into a leaf?
Through the stomata, openings in the leaf surface. By diffusion. There are three photosynthesis processes, C3, C4, and CAM. (These names describe part of the chemistry.) The desert plants (and some epiphytes) use CAM, for in this process, the stomata are closed during the day, and open at night. The plant absorbs CO2 into its system as a complex chemical (the CAM bit) over night, and during the day, the stomata close and the plant converts the CAM chemical into CO2 to be used for photosynthesis in the usual way. Normal plants open their stomata during the day, and CO2 diffuses in and O2 out.
Where do desert animals gets water?
some animals have designated places in their body to store water, such as the humps of a camel, and some get water from the plants they eat. The plants are able to store their water through guard cells which open and close the stomata, by opening the stomata at night, when its cooler, they are able to keep more water.
How do plants breathe at night when the stomata closed?
As humans plants also need oxygen to breathe they only take in carbon dioxide to do photosynthesis.So they wont do photosynthesis at night and so they only need to breathe. even though their stomata are closed at night some oxygen can go inside. and this is how plants breathe when their stomata are closed. pipidipo
What do CAM plants open during the day and close at night?
Cam plants close during the night and open during the day because they are photosensitive and respond to light. To do it experimentally, try with a torch for some time.
Why do plants vary stomata density and not stomata size?
I suppose it is because the cells multiply, not just grow, so some plants that need more regulating just adapt by multiplying their cells, not enlarging them.
What is the job of the stomata in photosynthesis?
Stomata open to let the leaves take in CO2 during process of photosynthesis, and allow oxygen to escape. They also allow water to escape, thus aiding sap transport. Some desert plants close their stomata during the heat of the day, and only open them at night. The CO2 they absorb during the night, they then store up, and allow photosynthesis to take place during the daylight. This is called C4 photosynthesis.
What adaptation helps some plants that live in dry deserts?
Closing there stomata during the day to conserve water and opening the stomata at night to take carbon dioxide. Naturally this divides the light independent and dependent reaction between two temporal periods of the 24 hour day.
What guard cells guard?
They are the pair of cells that surround the stomata (pores on the underside of leaves) They can change shape to open or close the stomata. Most plants open their stomata during the day (to allow co2 to enter for photosysthis) and close them at night. However cacti open their stomata during the night to reduce water loss, and have to use stored co2 for photosysthesis.
What are some differences between xerophyte and phreatophyte?
Xerophytes are known for having stomata that are fewer in number, sunken, waxy and\or open only at night. Hydrophytes often lack cuticle, because there is no need to prevent water loss. stomata are larger in quantity and typically open.
