Classification Instructional Approach(s): The ppt is intended to provide very general information. The majority of time should be spent completing the.

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Presentation transcript:

Classification Instructional Approach(s): The ppt is intended to provide very general information. The majority of time should be spent completing the activities and handouts that reinforce the informationNote: There is not a note-taking sheet for the first part of the ppt. Students will need to copy necessary information, and you may want to provide copies of certain slides as needed. Activating strategy - Allow students to briefly (1-2 minutes) discuss (Hypothesize) what they think classification means.

I can classify living organisms? Instructional Approach(s): The teacher should introduce the essential question for the lesson.

Standards GSE S7L1: Obtain, evaluate, and communicate information to investigate the diversity of living organisms and how they can be compared scientifically. GSE 7L1b: Evaluate historical models of how organisms were classified based on physical characteristics how that led to the six-kingdom system (currently archaea, bacteria, protists, fungi, plants and animals) (Clarification statement: This includes common examples and characteristics such as, but not limited to, prokaryotic, eukaryotic, unicellular, multicellular, asexual reproduction, sexual reproduction, autotroph, heterotroph, and unique cell structures.) Instructional Approach(s): The teacher should introduce the standards that align to the essential question.

Classification KIMS Diversity Binomial Nomenclature Taxonomy Cell Organism Unicellular Multicellular Producer (Autotroph) Consumer (Heterotroph) Prokaryote Eukaryote Kingdom Dichotomous Key

What are the characteristics of ALL living things? Made of Cells Use and need energy Grow and Develop Reproduce React to changes Respond to their environment

What is Taxonomy? Taxonomy is the branch of biology concerned with classifying and naming of organisms Biologists who study this are called Taxonomists

What is classification? Classification is the process of arranging organisms into groups based on similarities. Instructional Approach(s): Conclude Activating strategy - Allow students to briefly (1-2 minutes) discuss if their hypothesis of classification was correct.

Why should things be classified? Classification makes things easier to find, identify, and study. Instructional Approach(s): have students brainstorm things that are classified into groups.   Use page 215 of the McDougal Littell textbook to illustrate the seven levels of classification.

How did it start? People wanted to organize their world so they began grouping, or classifying everything they saw.

Things that fly Things that swim Things that crawl Things that walk on four legs Things that chew their food Things that swallow food whole Things that are toxic

Who is Carolus Linnaeus? Carolus Linnaeus was a Swedish botanist He developed a classification system based on similarities between organisms (plants/animals) Today we use an eight level system to classify living things

Scientists use a system of classification to organize and name living organisms. Instructional Approach(s): ask students to remember back to 5th grade when they learned about classification and see if they can remember anything about it. This may also be a good time to do an interactive activator such as the Shoe Investigation or Give students baggies with various objects to sort and classify Put students in groups of 3-4. Have one student each group think of an object. The student should then tell the group one characteristic (shape, color, size, type, and so on) of that object. The rest of the group guesses the object’s identity. Each time someone guesses incorrectly, another characteristic of the object should be given. Keep record of the number of guesses it takes to identify the object. If time permits, different group members can select objects. However, the activity as a whole should not take more than 7-10 minutes total.

Levels of classification from largest to smallest: Domain Kingdom Phylum Class Order Family Genus Species Levels of classification from largest to smallest: The Best Classification Rap with Lyrics https://www.youtube.com/watch?v=gj15UF08lUI Instructional Approach(s): Show video clips and allow students to sing along! Have students write down the levels of Classification. You may find later that students get mixed up with the levels of classification and the 6 Kindgdoms. Check for understanding that classification is actually to group together organisms with like characteristics and ultimately find their correct kingdom. You do not need to show all three classification rap songs. They are short, but let the students select which one they like the best to remember the order. Classification of Organisms https://www.youtube.com/watch?v=6WPBA4a6NjU

Instructional Approach(s): Use the diagram to discuss the characteristics each level has in common. Also have students discuss why the particular organism was eliminated each time.

Choose one of mnemonic device to help you remember the levels of classification from largest to smallest. Examples: King Phillip came over for grape soda. King Phillip came over from Germany Saturday. King Phillip can order fresh green salad Instructional Approach(s): Go over the examples, reviewing what each word stands for. Allow students to individually or with an elbow partner, to create their own mnemonic device.

Latin and Greek words are used to give organisms a name (similar to a first and last name) for identification. Instructional Approach(s): Present the information on the slide (they will copy from the next slide). Thus, the scientific name for the brown squirrel is Tamiasciurus hudsonicus

What is Binomial Nomenclature? Bi means two Nomen means name A binomial nomenclature is a scientific way of naming living organism with a genius and a species

(Notice that scientific name are always written in italics) Genus + species = scientific name Capital lower case A scientific name is the same no matter how many common names an organism might have. Instructional Approach(s): Present information in slide. Because there is a not note-taking sheet, be sure they copy the information from the slide into their notebook. (Notice that scientific name are always written in italics)

Classification of Living Things Video: 6-Kingdoms https://www.youtube.com/watch?v=u90WvBZe-tY Mr. Parr: Classification Song (same but with words) https://www.youtube.com/watch?v=dnF_UdPbJZ0 Instructional Approach(s): The videos are all similar. Select one of the clips to reinforce classification. Mr. Parr: Classification Song (modified w/pics) https://www.youtube.com/watch?v=wgivfVM9yOQ

Other examples: Ursus horribilis for grizzly bear Felis domesticus for house cat Instructional Approach(s): Go over examples, reviewing genus, species and correct capitalization and italics. Watch video clip. https://www.youtube.com/watch?v=aJUB4R5j0dI

Most scientists today use a system that includes six kingdoms. Transition slide

Kingdoms 3. Protists 4. Fungi 5. Plants 6. Animals Moneran: 1. Archaebacteria 2. Bacteria 3. Protists 4. Fungi 5. Plants 6. Animals Instructional Approach(s): The teacher should present the information on slide. Be sure to note the use of the word “Moneran”. While not included in further instruction, it appears in sample questions on the content map.

Instructional Approach(s): Have students use organisms in the illustrations to determine possible characteristics for each kingdom.

Instructional Approach(s): The teacher should use the image on the slide to illustrate some of the vocabulary for the kingdoms.

Kingdoms The grouping of organisms into KINGDOMS is based on 4 factors: 1. Cell Type 2. Cell Number 3. Feeding Type 4. Reproduction

Prokaryotes (NO nucleus) & Eukaryotes (DO carry a nucleus) 1. Cell Type- The presence or absence of a nucleus. Prokaryotes (NO nucleus) & Eukaryotes (DO carry a nucleus)

2. Cell number - Whether the organisms exist as single cells or as many cells Unicellular- single celled organism Multicellular- many celled organism

Unicellular Multicellular

3. Feeding Type - How the organisms get their energy *Producer (Autotroph) Makes it’s own food *Consumer (Heterotroph) Must eat other organisms to survive

4. Reproduction Type - How the organisms produce offspring *Asexual One parent Binary Fission Fragmentation Budding *Sexual Two Parents

6 Kingdoms Prokaryotes Eukaryotes Archaebacteria Eubacteria Protista Fungi Plantae Animalia Prokaryotes Eukaryotes

First Two Kingdoms The first two kingdoms involve bacteria. Scientists at one time grouped bacteria into one kingdom but just recently divided them into two groups: Archaebacteria and Eubacteria Both groups of bacteria are prokaryotes and unicellular

Archaebacteria Archaebacteria is called ancient bacteria as they date back 4 billion years Found in harsh environments that no other organism lives. We call them “heat-loving” or “salt-loving” or “Methane-loving” The yellow and orange rings around the hot springs in Yellowstone National Park were formed by the remains of archaebacteria billions of years ago!

Archaebacteria Gets energy from sunlight (producer/autotroph) Breaks down things in dead or decaying organisms (decomposer/heterotroph) Asexual reproduction by binary fission Reproduces in a short amount of time Different chemical makeup than bacteria

Archaebacteria Examples: Halophiles- found in conditions with high salt content. Lakes and seawater. Methanogens- produce methane and found in intestines of ruminants and in bogs and sewage treatment plants. Thermophiles- found in environments with intense heat, like springs and near hydrothermal vents.

Eubacteria It is the eubacteria that most people are talking about when they say bacteria, because they live in normal conditions like the human body or pond water.

Bacterial Shape Spherical Rod Spiral

Bacterial Locomotion Some bacteria have flagella or cilia for movement Some secrete a slime layer and ooze over surfaces like slugs

Bacterial Feeding Some are producers/autotroph and can photosynthesize like a plant. Some are decomposers/heterotroph that decompose dead or decaying organisms.

Bacteria creates yogurt, cheese, medicines and cleaning solutions Bacteria creates yogurt, cheese, medicines and cleaning solutions. They also are decomposers and help with the nitrogen cycle. Examples: E. Coli, Streptomyces, Rhizobium 99% of bacteria is helpful and only 1% is harmful causing diseases such as tuberculosis and diphtheria.

Bacteria Reproduction Reproduces asexually by binary fission. Reproduces in a short amount of time

3rd Kingdom/Protists Protists are Eukaryote unicellular and multicellular organisms. Examples: slime molds, protozoa, primitive algae and brown algae.

Protists Most diverse Kingdom Animal-like, fungus-like, and plant-like protists (the left-overs) Some are beneficial Mostly asexual reproduction, but some sexual reproduction Found in lakes and ponds Some can cause diseases in humans, such as:

Protists Disease Amebic dysentery Ameba histolytica

Protists Disease African Sleeping Sickness  Trypanosoma

Protists Disease Malaria Malaria kills about one million people every year! Plasmodium

Protists Movement Pseudopod (false foot) Flagella/cilia (hairs)

Protists Feeding Style Protists can be producers(autotrophs) or consumers(heterotroph) Decomposers(heterotroph)

Protists Ameoba Euglena Diatom Paramecium Algae Instructional Approach(s): Use pictures to illustrate characteristics of protists. Algae

4th Kingdom/Fungi Fungi includes some of the most important organisms. Cycle nutrients through ecosystem by breaking down dead organic material.

Fungi All fungi are eukaryotic They may be unicellular or multicellular Asexual or sexual reproduction Found in wet areas Unicellular (yeast) Multicellular

Fungi Fungi can be very helpful Penicillin Fungi can be very helpful Many antibacterial drugs are derived from fungi

Fungi Fungi also causes a number of plant and animal diseases: Athlete's Foot

Fungi Ringworm

Fungi Movement Fungi do not move They have root-like structures that they use for attachment

Fungi Feeding All fungi are consumers (heterotrophs) They absorb nutrients from dead organic matter

5th Kingdom/Plants Plants are multicellular organisms made of Eukaryotic cells that have a cell wall. They get food through photosynthesis so they are producers (autotrophs). Asexual or sexual reproduction

Mosses

Liverworts & Hornworts

Ferns

Conifers (cone bearing) Gymnosperms Oldest vascular plants

Flowering plants Angiosperms

6th Kingdom/Animalia Animals are multicellular and made of the more complex Eukaryotic cells. All are consumers (heterotrophs) that are capable of movement at some point in their lives.

Sexual reproduction Some important animal groups (phyla) are the:

Porifera: sponges

Cnidarians: Jellyfish, corals, and other stingers Cnidarians: Jellyfish, corals, and other stingers. . . Their stinger is called a nematocyst

Nematocyst

Mollusks Octopi, squid Clams, oysters Snails, slugs

Platyhelminthes (flat worms) Tapeworms & flukes Human liver fluke

Annelids (segmented worms) Worms & leeches

Echinoderms Starfish, sea urchins, sea cucumbers

Arthropods Shell fish, arachnids & BUGS!

Chordates The Chordata is the animal phylum with which everyone is most familiar, since it includes humans and other vertebrates.