How Plants Conserve Water

Here we see evolutionary adaptations which plants use to conserve water. Cacti in the desert have survived because their leaves have evolved into non-photosynthetic spines. Therefore, these spines have no stomata to preform evapotranspiration. Evapotranspiration is the release of water vapor during photosynthesis. When stomata on a leaf are open, water is released. Pine leaves have become needle like, decreasing exposure of stomata. They also are surrounded by a waxy cuticle and the stomata themselves are sunken. This prevents water loss during the Pine's dry season of winter. Some plants such as maples lose their photosynthetic leaves all together during the cold months as to cease photosynthesis and conserve water. Tiny, hair like trichomes are present in some plants amongst stomata as to prevent excess water escape and keep relative humidity around stomata high. All of these adaptations have come about because of evolutionary pressures placed on plants. Aquisition and conservation of water is essential to plant life.

Category:

Education

Tags:

• Conservation
• of
• water
• Stomata
• Photosynthesis
• Plants

[MishL129Lee]

haha you win... touche

[MishL129Lee]

You must know what you're taking about, especially because you know the difference between "there" and "their"

[germanteeth]

@lawmanbaseball okay..i don't doubt that be published that stuff before he died, i believe you on that account. :)

[lawmanbaseball]

@germanteeth I dont want to get in an evolution battle, im just saying that your historical facts are wrong. darwin published his theory before his death

[germanteeth]

@lawmanbaseball okay...that's your opinion. :)

[lawmanbaseball]

@germanteeth ha you are so wrong its not even funny

[blondiegirl516]

Thanks for making this video!! Really helpful for my science homework!!

[germanteeth]

you can believe that ...i'm sorry but i don't believe that and i can't.

[downapub]

I promise you there is such thing as evolution, a quick look at the fundamental metabolic enzyme sequences in a genebank will confirm it, as well as highlighting the differences which seperate (for example) bacteria and eukaryotes. I haven't seen a single shred of plausible evidence which refutes the theory and believe me when i say i've heard a great deal of incoherent arguments against it, none of which are based on hard evidence. A good example of evolution is anti-bacterial resistance in TB.

[medoforsex]

Compare ? water loss in virus-infected plant compared to normal plants?

if any one have any idea please help me

thanks