Classification of Living Things

How are organisms classified?

Open Ended

Why do you think scientists classify living things?

Why do we classify living things?

• There are millions of living things on Earth.

• Classifying allows scientist to make connections between new and discovered species.

• Make connections between different living things.

Open Ended

What do these living things have in common?

How do scientists know living things are related?

• There are two ways: physical and chemical characteristics

• Physical includes skeletal structures, egg development, body adaptations.

• Chemical includes: DNA and RNA, mutations in the organisms' genes

How are living things classified?

• Taxonomy is the science of describing, classifying, and naming living things.

• There are 8 levels of classifying.

• Domain is the largest

• Species is the smallest

How are living things classified?

• There is a riddle to remember the order of the levels.

• Dear King Philip Came Over For Good Soup

Multiple Choice

What is taxonomy?

• The study of naming and classifying things

• Preserving dead organisms

• The science of paying your taxes

• My cat's name

Multiple Choice

Why do we classify living things

• To keep information private

• To make finding information easier

• To confuse students

• To make animals healthier

Multiple Choice

What is the smallest and most specific group in the classification system?

• species

• domain

• kingdom

• Genus

Multiple Choice

What is the largest and most general group that an organism is classified into?

• Domain

• Kingdom

• Species

• Family

Multiple Choice

Taxonomy is the study of plants

• True

• False

How are living things named?

• Each species has a two part scientific name.

• It includes the Genus and the Species.

• The Genus includes similar species.

• The Species is unique to that one living thing.

Multiple Choice

To what genus does a Banana tree belong to?

• Musa

• Ficus

• paradisicum

• Bamboosa

Multiple Choice

In a scientific name, what does the SECOND name identify?

• Genus

• Species

• Kingdom

• Domain

Multiple Choice

In a scientific name, what group does the FIRST name identify?

• Genus

• Species

• Kingdom

• Domain

Dichotomous Keys

• Tools that scientists use to identify unknown animals.

• It has a series of questions that scientists use.

• As you move through the key, it helps you identify the organism

Multiple Choice

The first part of a scientific name is an organism's _______________ and the second part is its ________________.

• species, genus

• phylum, order

• class, spices

• genus, species

Multiple Choice

What is the purpose of a dichotomous key?

• to find a common ancestor

• to show the evolution of organisms

• to show relationships between organisms

• to identify organisms

Multiple Choice

When using a dichotomous key to identify organisms, what do we look at?

• physical features

• weather patterns

• environment

• diet

Multiple Choice

What is monster # 1 ?

• Alienus quadlegicus

• Alienus haircus

• Alienus Tritoothicus

• Alienus Blobicus

Classifying Living Things

Prep Course

Open Ended

How can you tell if something is alive?

Living things:

• Made of cells

• Organized

• Grow and develop

• Respond to environment

• Reproduce

• Use energy

Multiple Choice

Which is NOT a characteristic of living things?

• Made of cells

• Made of muscles

• Use energy

• Move

Made of Cells

• All living things are made of cells

• Unicellular Organisms

• Multicellular Organisms

• 
  

• 
  

• 
  

Examples of Unicellular Organisms

• They can stay alive by itself

There are many ways to classify living things

• Unicellular Organisms vs Multicellular

• Producers vs Consumers

• Habitat (Where they live)

Multicellular Organisms

• Trillions of cells

• Cells work together

• Different parts of different types of cells

Multiple Choice

Multicellular or Unicellular?

• Multicellular

• Unicellular

Multiple Choice

Unicellular or Multicellular?

• Unicellular Organism

• Multicellular Organism

Living things:

• Grow

• Develop

• Reproduce

Living things use Energy

• Some make own food

• Some eat others

• 
  

Autotrophs

• Make own food

• Convert sunlight into food (photosynthesis)

• Some bacteria convert chemical into food (chemoautotrophs)

Heterotrophs

• Get energy from other organisms

• Ex. Animal and Fungi

• 
  

Multiple Choice

What is an heterotrophs ?

• Make their own food

• Make their own energy

• Eat others for energy

• All of the above

Multiple Choice

What type of organisms are autotrophs?

• They reproduce

• They make their own food

• The eat others for food

• All are correct

Multiple Choice

What is an example of autotrophs?

• Cat

• Dog

• Rabbit

• Grass

Multiple Choice

What is an example of heterotroph?

• tree

• bugs

• water

• all of the above

Organisms need:

• Habitat: environment they live in

• Food and water

Deep sea fish

• Habitat: Deepsea

• 
  

Habitat: Rainforest

Summary

• Classify things to make it easier to learn/remember/research

• Living things: Eat, move, reproduce, organize, respond, use energy, grow

• There are many ways to classify organisms

Cells and Organism Structure

Year 7

What we will learn about..

​- unicellular vs multicellular organisms

​- differentiated cells

​- organism structure

Multiple Choice

How are multicellular and unicellular organisms different?

• Unicellular organisms have one cell and are smaller than multicellular organisms.

• Multicellular organisms have one cell and are larger than unicellular organisms.

Multiple Choice

Which best explains how a single-celled organism can survive without other cells?

• They do not need to perform more than one function to survive.

• They are able to perform all necessary functions within one cell.

• They do not need any substance from outside of the cell.

Multiple Choice

Every plant and animal starts out as a single cell. This one cell divides and multiples to form a more complex multicellular organism.

• true

• false

​Unicellular vs Multicellular?

• ​Unicellular = one cell

• ​Multicellular = many cells

• ​Many unicellular organisms have a different structure than plant or animal cells

• ​They are often MUCH smaller, and sometimes do not contain a nucleus, mitochondria, or other organelles

• ​They have everything they need to survive in ONE CELL

​Multicellular Organisms

• ​All started out as one cell

• ​As you grow, your cells DIFFERENTIATE to become different types of cells to carry out all the functions of the organism

  • ​e.g. brain, skin, heart cells. These are all different, and carry out different function to keep the organism alive

​Advantages and Disadvantages:

• ​MC takes more energy to be alive and to grow

• ​UC is quick to reproduce

• ​MC are more diverse

• ​MC are more resilient (i.e. one cell can die, but the whole organism if OK)

• Can you think of anymore?

​Structure of MC Organisms

• ​Same type of specialised cell --> Tissue --> Organ --> System --> Organism

• ​Example:

  • ​Brain cells --> Brain tissue (grey matter) --> Brain --> Nervous System --> Organism

Multiple Choice

Basic unit of life

• Cell

• Tissue

• Organ

• Organ System

Multiple Choice

Multicellular Organisms

• Made of 1 cell

• Made of more than 1 cell

Multiple Choice

Based on this image is the Euglena multicellular or unicellular?

• 1. Multicellular

• 2. Unicellular

Multiple Choice

Classify the following examples (pictures) as unicellular or multicellular

• 1. Unicellular

• 2. Multicellular

Types of Organisms

​

Ecosystem

An ecosystem is a community of interacting organisms and their environment of abiotic and biotic factors.

Producer

A producer is a living thing that makes its own food from

sunlight, air, and soil.

Consumer

A consumer is a living thing that cannot make its own food.

Decomposer

Decomposers are consumers that get energy from the remains of dead plants and animals.

Multiple Select

Which is not a consumer?

Select all that apply

Multiple Select

Select all that apply: Producers are?

• plants

• animals

• trees

• grass

Multiple Choice

Consumers are

• consumers that get energy from the remains of dead plants and animals.

• living things that cannot make its own food.

• a living thing that makes its own food from

  sunlight, air, and soil

Multiple Choice

A decomposer.......

• makes its own food from

  sunlight, air, and soil

• can't make their own food

• get energy from the remains of dead plants and animals.

Multiple Select

Which is an example of a decomposer?

Select all that apply