Levels of organization 2

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LEVELS OF ORGANIZATION LIVING THINGSECOSYSTEMS

Identify levels of organization of living things in nature establishing

intuitive relationships among them.

INTRODUCTION

A system is made of many parts that work together for a purpose. A bicycle with a rider is an example of a simple system. The handlebars, pedals, gears, tires, brakes, frame and rider work together. Like all systems, parts of the bicycle interact with other parts. For example, parts on the handlebars may control the gears or the brakes.

A system is made of many parts that work together for a purpose

Frame.

Handlebar

Pedals

Brakes

If you have ridden on a bicycle you may know what each part does.

Explain in briefly what the parts that are pointed at are good for.

Frame.

Handlebar: it holds the brakes and gears. The rider turns it to go left, right or to keep straight ahead.

Pedals

Brakes

A system is made of many parts that work together for a purpose

Hard disc, power supply, input/output ports- cd rom drive, motherboard.

Explainwhy a computeris a kind of system?

QUESTION

Which one is NOT an example of a system?

A. School.

B. Hospital.

C. Airplane.

D. River.

QUESTION

• Explain why a hospital and an airplane are examples of systems? Give two reasons for each one.

• Give two reasons to explain why a river is not an example of a system?

The next slide shows pictures of different organisms that can be seen or

found at school.Every one has particular and unique

characteristics. But no matter how different they are

they belong to the same ecosystem and they are related to each other.

Why do you think are there different kinds of animals and plants in nature?

An individual is a singular organism which has some unique characteristics and who belongs to a species.

Africa's smallest feline predator, nocturnal, spotted coat.

Brown head and body with a darker abdomen, toxic alkaloid venom, feed mostly on young plants, seeds and crickets.

A species is a group of very similar organisms whose members can mate with one another and produce offspring

Saman Holstein

Species can have off springs the same kind with the same physical traits.

QUESTION

What is the main characteristic of a species?

A. It is a living thing.

B. It does activities of life.

C. Members can mate with one another and produce offspring the same kind.

D. It is an organism.

Task: Talk to your classmate and think of other examples of individuals. Think of different plants and list three individuals

bromelia chiminango mango

Then, think of different animals and list three individuals. Write them down in your science notebook.

QUESTION

Which one is not a species?

A. Tree

B. Holstein

C. Saguaro Cactus

D. Gray Wolf

QUESTION

What species cannot be found in Colombia?

A. Cobra.

B. Chiguiro.

C. Titi monkey.

D. Chiminango.

Where do you think this picture was taken?

What are some of the problems that a chiguiro as a species might have in

Colombia?

What are some of the problems that a titi monkey as a species might have in

Colombia?

QUESTION

TRUEOR FALSE

In our country we can find all the species of animals that live in the world.

Justify and explain your answer.

Dark Pink Bromelia

Crawling Lawn grass (gateadora)

Fique o cabuya

A population is all the members of one species that live within an area of an ecosystem.

The size of each population may change depending on the amount of water, food, and space available.

Why are there so many gazelles in this habitat? Explain.

The size of each population may change depending on the amount of water, food, and space available.

• What might happen to a population of gazelles in the African savannah ecosystem during a drought (long dry season)?

• What others populations may be affected by the decrease of gazelles?

Task: You have 20 minutes to complete the next instruction.Go outside from your classroom to the places suggested by your teacher. Take a closer look at all of plants and animals (including tiny insects when possible). Identify and list two different populations of plants, two different populations of animals and two different populations of insects. Keep these tips when doing your observation:Is the population small, medium or large? Do you think the population has been always there or was it planted or brought to this ecosystem? Is the population surrounded by others populations or is the population isolated?Draw pictures of each population.

PLACES you can go to:

NEXT TO JAVERIANA´S POND

PLAYGROUND ELEMENTARY BUILDING

AREAS AROUND FOURTH GRADE HALL

PLAYGROUND NEXT TO ART CLASSROOM

Soccer field

Buses parking lot

Swimming pool

Cafeteria

Palma real

Bamboo

Heliconia

QUESTION

Population is this context means:

A. All people living together in a place.

B. All the living things living together in a place.

C. All the animals or plants living together in a place.

D. All the members of one species living together in a place.

QUESTION

What is not an example of population?

A. All people living in my neighborhood.

B. A sugarcane plantation.

C. My pet.

D. Many Barbary ducks (creole duck) in the Javeriana’s lake.

COMMUNITYThe different populations that interact with each other in the same area form a community.

All the organisms (plants, trees, fungi, birds, reptiles, fish, amphibians, mammals, microorganisms) in the Amazon rainforest form a community.

Within the communities, energy flows in food webs.

Members of a community depend on each other to fill needs such as food, water, shelter and reproduction.

The area or place where an organism lives in an ecosystem is called a habitat.

Community= different populations

QUESTION

Which one is a particular characteristic of a community?

A. All members depend on each other.

B. Many organisms live together.

C. It is the home of many species.

D. It has many plants, animals, insects, birds, mammals and reptiles.

Task: Look at the slides showing a natural community. Identify with your classmate what different individuals/populations you may spot living together.Describe in what way they interact with each other and with the nonliving parts of the environment. Write your observations in your science notebook.

QUESTION

How different population might interact with each other?

Identify at least two forms of interactions among some species in the Serengeti National Park

QUESTION

ECOSYSTEMS

• An ecosystem is all the living and nonliving things in an environment and the many ways they interact.

• The nonliving parts of an ecosystem include air, water, soil, sunlight and climate.

• Animals, plants, fungi and bacteria are the living parts of an ecosystem.

ECOSYSTEMS

An ecosystem may be large, like a desert. Explain why a dessert is an ecosystem?

ECOSYSTEMSAn ecosystem may be small, like a rotting log.Explain why a rotting log is an ecosystem?

GRASSLAND ECOSYSTEM

DESERT ECOSYSTEM

RAINFOREST ECOSYSTEM

WATER ECOSYSTEM

LET’S OBSERVE AND ANALYZEOUR SCHOOL ECOSYSTEM

• Task: Work with your closest classmate on this question:

• What are the living and nonliving things in your school? Explain and write: how living things (everyone who works in the school) use nonliving things to interact and meet students needs at school?

• Talk to your closest classmate and think of three different ways organism interact with each other and with nonliving parts in the Javeriana´s pond: water ecosystem.

• Describe and explain how they interact. Write conclusions down in your science notebook.

Levels of organization 2

Science