Living Things

S7L4• Students will examine the dependence of

organisms on one another and their environment.

Living vs. Nonliving #1

R. Bryant 2008 WSMS – Based on “Science Starters” by T. Trimpe at http://sciencespot.net

Determine which objects are considered living or nonliving.

A. B. C.

D.

E.F.

The solution …

Living NonLiving

Why is R.O.G.E.R.S. a living thing?

• Living things respond……

Respond/React to Changes

• Organisms react to change in their surroundings.• Any reaction to change is called a response.– For example: A bright

light may cause you to blink.

Why is R.O.G.E.R.S. a living thing?• Living things are organized………….

Organized from smallest made of Cells

• Organisms are made up of one or more cells.

• A cell is the basic unit of structure and function in living things.

–Cells = the

of life.

• Cells are organized into tissues• Tissues are organized into

organs• Organs are organized into

organ systems• Organ systems are organized

into organisms

Why is R.O.G.E.R.S. a living thing?

• Living things grow and develop…….

Grow and Develop• Living things change, or develop, during

their lifetimes.• One way organisms change is by

growing.• Cell division - the orderly formation of new cells. • Cell enlargement - the increase in size of a cell.

Cells grow to a certain size and then divide. • An organism gets larger as the number of its cells

increases. • Living things may also change in appearance.For example: tadpoles and frogs

Why is R.O.G.E.R.S. a living thing?

• Living things take in and use energy……

Use and Need Energy• All organisms

need and use energy to live.

• Energy is the ability to do

work.

• Sunlight is the source of energy for most living things.– Plants use the energy in

sunlight to make food – Animals get energy by

eating plants or other animals that have eaten plants.

– Bacteria and fungi get energy from decaying plant or animal matter

Why is R.O.G.E.R.S. a living thing?

• Living things reproduce……….

ReproduceReproduction is not essential for the survival of individual organisms, but must occur for a species to survive. All living things reproduce in one of the following ways:

Asexual reproduction - Producing offspring without the use of gametes, sex cells. Sexual reproduction - Producing offspring by the joining of sex cells.

Why is R.O.G.E.R.S. a living thing?• Living things have Similar

chemicals…….• Most common elements in living things are carbon, hydrogen, nitrogen, and oxygen. These four elements constitute about 95% of your body weight.

Adapted to Their

Surroundings• Organisms are adapted, or suited,

to their surroundings.• All organisms have features that

help them survive in their surroundings.– For example: fish have gills

Other characteristics

• Movement – Internal movement of organelles and fluids– External movement- up or down– Locomotion

• Maintain Homeostasis– Relatively constant internal environment, pH,

temp, salinity (like humans body temperature stays right around 98.6)

What do living things need?• A place to live–Habitat -Soil, water, air, gasses

• Space• Raw materials- Food, water, minerals