Download Adaptations For Survival

Adaptations…in PLANTS
Plants can adapt too!

Plants have certain adaptations to help
them survive
(ex-A cactus will store water to survive longer
without available rain.)
We all know….
…Plants have roots.

What is the purpose for this adaptation?

Why do roots grow downward?
We all know….

What is the purpose for this adaptation?
A plant needs roots for two chief reasons: as a
means of anchor age or support, and to
absorb water and mineral salts from the soil.

Why do roots grow downward?
Roots grow toward and reach for water.
In Plants…
Plants have xylem
 This tissue is responsible for carrying
water up the stems of plants to leaves.

Stimulus and Response…

An organisms behaviors are in response
to a stimulus from their environment.
A stimulus is any event or happening that
causes a response
(ex-Someone calls your name… you turn
around)

Regulation

Living organisms regulate their internal
conditions to balance their exterior
environment.

Homeostasis is like a continuous circle
of adjustments and corrections
A Response to Sunlight or Gravity??
What will this plants roots look like?
Geo + Tropism

A "tropism" is a plant movement
triggered by stimuli.

The term "geotropic" refers to a plant
whose roots grow down into the soil as a
response to gravity.
Examples…In Plants

Plants control themselves with water
Examples…In Plants

What structure allows water to move
through the stem of plants?
Examples…In Plants

What structure allows water to move
through the stem of plants?
XYLEM
ReviewList the organelle with its function

Vacuole


Membrane


Cell Wall
Nucleus
Mitochondria

Cytoplasm
Osmosis & Diffusion…
Osmosis & Diffusion

Solute-A solute is dissolved in another
substance, known as a solvent. (NaCl or
C6H12O6)

Solvent- A solvent is a liquid or gas that
dissolves a solid, liquid, or gaseous solute,
resulting in a solution. (The most common
solvent in everyday life is water )
Permeability….

A measure of the ability of a porous
material to allow fluids to pass through it.
Osmosis & Diffusion
 Osmosis
is the movement of
solvent molecules through a
selectively permeable membrane
into a region of higher solute
concentration, aiming to equalize
the solute concentrations on the two
sides.
Where is there more salt?
Diffusion
Diffusion describes the spread of particles
through random motion from regions of
higher concentration to regions of lower
concentration.