Thirst for Life

Guess: Why Are We Here?Guess: Why Are We Here?

We will help you understand how plants depend on water

Why Do Plants Need Why Do Plants Need Water?Water?

Plants like all Plants like all living creatures living creatures need water to need water to survive survive

Water is a basic for all plant life

Types of Plants Depending on Water

• All plants need water• Some plants need more water than others

Land Plants Location: garden, rainforest, forest, desert, mountains

Water Plants Location: ponds, lakes, rivers

Underwater Plants Location: seas, oceans.

Desert Plants Desert Plants AdaptationAdaptation

Desert plants have Desert plants have adapted to the adapted to the extremes of heatextremes of heat with little amount of waterlittle amount of water

They often have few or no leaves, which reduces transpiration.

Cacti usually have special means of storing and conserving water.

Some plants like desert irises have adapted to arid environments by growing extremely long roots, allowing them to acquire moisture at or near the water table.

Mountain Plants Adaptation

The mountain environment is very harsh for plant to grow in.

They have a wide rot system in order to gather more water.

The flowers usually have very tough leaves and are waxy to prevent drying out.

The fuzzy underside of Labrador tea combs water droplets from clouds and acts like a sponge to keep the leaf surface moist. 

Mountain cranberry demonstrates another adaptation: a waxy cuticle that covers leaf surfaces and seals in moisture.

Edelweiss

Chiondoxa

Mountain cranberry

Labrador tea

Rainforest Plants Adaptaion

The tropical rainforest flowers naturally grow in places with rainy, humid and warm climates.

Rainforest plants have made many adaptations to their environment.

Many plants have drip tips and grooved leaves, and some leaves have oily coatings to shed water.

Gloriosa

Ananas

Erythrina

Water and Underwater Plants Adaptation

Water and underwater plants have adapted to living in or on aquatic environments.

They have smaller roots that water can go directly into leaves.

Surface plants like water lily have flat leaves for floatation

Science, grade 4Olga Volnycheva