Plant Adaptations

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Presentation Transcript

Plant Adaptations : 

Plant Adaptations

Grasslands & High Country : 

Grasslands & High Country

Rainy Jungles & Dry Deserts : 

Rainy Jungles & Dry Deserts

Adaptation : 

Adaptation Is Fitting into your surroundings

Plants Basic Needs : 

Plants Basic Needs Sunlight Water Food

Plant Habitats : 

Plant Habitats Where a plant lives Provides everything a plant needs to grow and reproduce

Water : 

Water Shapes the basic pattern of life

Mangroves : 

Mangroves Native to tropical coastlines Grow where there is too much water Water contains a potential killer---Salt! They still manage to flourish in these areas!

How Mangroves deal with Salt : 

How Mangroves deal with Salt Some have tiny glands under their leaves that excrete the excess salt the plants take in. Some have chemical barriers that keep the excess salt out.

Another problem mangroves face… : 

Another problem mangroves face… Water-soaked mud lacks oxygen The mangrove roots must have oxygen!

Adaptation to lack of Oxygen : 

Adaptation to lack of Oxygen Pneumatophores Pencil-like growths Sprout from the mangroves’ roots Covered with tiny openings - allows air in Air contains oxygen Oxygen filters down to the mangroves’ roots

Pneumatophores : 


Problems with Support!! : 

Problems with Support!! Mangroves grow in mud Mud does not provide enough support to hold the plants upright They sprout special “prop roots” to hold them

Seed Adaptations : 

Seed Adaptations Germinate before they drop from parent plant Stay attached until developed enough to survive on their own Seeds then drop into the water and float away

Desert Habitats : 

Desert Habitats Lack of water is the controlling factor in the desert All plants need water They get very little in the desert!!

Desert Adaptations : 

Desert Adaptations “Avoiders” Flowers survive by avoiding the worst heat of the day Avoiders flower and produce seeds during the coolest and wettest months of the year They wither and die during the hottest months Seeds remain inactive until it rains

Octillo Bush : 

Octillo Bush Survive by regulating the pace of their lives Leaves cover their branches during the cool, wet months

When the desert heats up… : 

When the desert heats up… Octillo shed their leaves Slow their metabolism to a crawl Stay dormant (hibernate) until the rains come Then they sprout fresh leaves, continuing the cycle

Real “copers” of the desert : 

Real “copers” of the desert Cactus Able to survive the desert’s hardships Adapt to the worst the desert has to offer

Barrel Cactus : 

Barrel Cactus Masters of water management Shallow, widespread roots suck up any rain that falls nearby Store water in their sponge-like insides Water reservoirs to ensure survival in the driest times

More on Barrels!! : 

More on Barrels!! Have a tough, pleated skin Skin expands as water from the roots is absorbed Skin is covered with sharp spines Spines protect the cactus against critters trying to get to the water inside

In Conclusion… : 

In Conclusion… A Plant’s survival as an individual and as a species is basically determined by how well they Adapt to their environment.

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