PLANTS AND WATER one of the most important

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PLANTS AND WATER one of the most important environmental limiting factors for plants ©

PLANTS AND WATER one of the most important environmental limiting factors for plants © 2016 Paul Billiet ODWS

Hydrophytes l Plants adapted to excessive amounts of water © 2016 Paul Billiet ODWS

Hydrophytes l Plants adapted to excessive amounts of water © 2016 Paul Billiet ODWS Elodea canadensis © P Billiet

Mesophytes Plants adapted to moderate amounts of water © 2016 Paul Billiet ODWS Ranunculus

Mesophytes Plants adapted to moderate amounts of water © 2016 Paul Billiet ODWS Ranunculus ficaria © P Billiet

Xerophytes l Plants adapted to low amounts of water © 2016 Paul Billiet ODWS

Xerophytes l Plants adapted to low amounts of water © 2016 Paul Billiet ODWS Eryngium maritimum www. geog. sussex. ac. uk/. . . /slides/Sea. Holly. jpg

Halophytes l l Plants which can grow in salty environments. Water may be abundant

Halophytes l l Plants which can grow in salty environments. Water may be abundant but because of osmotic forces it may be unobtainable to the plant tissues without special adaptations Salicornia europaea © 2016 Paul Billiet ODWS www. plant-identification. co. uk/images/chenopo. . .

Hydrophytes www. british-wild-flowers. co. uk/00%20 John%20 So. . . www. smgrowers. com/. . .

Hydrophytes www. british-wild-flowers. co. uk/00%20 John%20 So. . . www. smgrowers. com/. . . /Vallisneria_gigantea. jpg © 2016 Paul Billiet ODWS

Hydrophytes www. northern. edu/. . . /leaf%20 example 2%20 copy. JPG www. rz. uni-karlsruhe.

Hydrophytes www. northern. edu/. . . /leaf%20 example 2%20 copy. JPG www. rz. uni-karlsruhe. de/~db 26/Fotos-Hassler/S. . . © 2016 Paul Billiet ODWS

Xerophytes l Plants which live in arid environments © 2016 Paul Billiet ODWS ©

Xerophytes l Plants which live in arid environments © 2016 Paul Billiet ODWS © P Billiet

Xerophytes Reduced leaf surface Rolled leaves © P Billiet © 2016 Paul Billiet ODWS

Xerophytes Reduced leaf surface Rolled leaves © P Billiet © 2016 Paul Billiet ODWS

Xerophytes Water storing tissues © 2016 Paul Billiet ODWS © P Billiet

Xerophytes Water storing tissues © 2016 Paul Billiet ODWS © P Billiet

Xerophytes Waxy leaves Ilex aquifolium © P Billiet

Xerophytes Waxy leaves Ilex aquifolium © P Billiet

Xerophytes l l l l Reduced leaf surface Reduced number of stomata The stomata

Xerophytes l l l l Reduced leaf surface Reduced number of stomata The stomata are often sunken in pits to prevent water vapour from being blown away Grasses may roll their leaves up to enclose their stomata in the same way A thick waxy cuticle Succulent tissue which can store large amounts of water They may have an extensive rooting system © 2016 Paul Billiet ODWS

Xerophytes l l l They may able to withstand an excessive desiccation of their

Xerophytes l l l They may able to withstand an excessive desiccation of their tissues A metabolism which permits them to open their stomata at night and combine CO 2 with organic acids in the dark Crassulation Acid Metabolism or CAM C 4 plants have evolved an enzyme which fixes CO 2 with organic acids This enzyme has a higher affinity for CO 2 than Rubisco These plants can photosynthesis with stomata that are not so wide open as the normal plants (C 3 plants), reducing water loss © 2016 Paul Billiet ODWS

WATER Plants most important chemical most often limitsWATER Plants most important chemical most often limits
WATER Plants most important chemical most often limitsWATER Plants most important chemical most often limits
PLANTS AND WATER one of the most importantPLANTS AND WATER one of the most important
PLANTS AND WATER one of the most importantPLANTS AND WATER one of the most important
PLANTS A Why are plants important Plants arePLANTS A Why are plants important Plants are
PLANTS NUTRITION IN PLANTS Most plants make theirPLANTS NUTRITION IN PLANTS Most plants make their
Notes Water Chemistry Water Water the most importantNotes Water Chemistry Water Water the most important
Water Balance of Plants Water balance of plantsWater Balance of Plants Water balance of plants
Water Potential Plants water potential Plants can useWater Potential Plants water potential Plants can use
Most Important Element in life Most important ElementMost Important Element in life Most important Element
The Most Important Crystal Structures The Most ImportantThe Most Important Crystal Structures The Most Important
Plants WHAT ARE PLANTS Plants are multicellular andPlants WHAT ARE PLANTS Plants are multicellular and