Living things
vs
Non- living things
What makes people and
plants different from light
and books?
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
First characteristics of life
Organization:
-For example, kitchen for cooking ,and the bedrooms are for sleeping.
-Living things are also organized.
-Cell (smallest function of life)
- Multicellular and unicellular organism
Characteristics
of life
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
unicellular
Single cell
Life functions performed by single cell(eat ,reproduce)
Simple cell´s structure
Old organism
Small cells
Examples: algae, bacterias,archaea.
Large number of cells
Different cell perform different specific function(nerve cell,blood cell etc).
Complex cell´s structure
Young organism
Large cells
Examples: Animals, plants,fungi
multicellular
Second characteristics of life
Growth and Development:
-Growth depends on size
-Unicellular growth depends on its unique cell size but the multicellular depends on the amount of cells
-Development depends on shape
(tadpole to frog)
-
Characteristics
of life
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
Third characteristics of life
Reproduction:
-For living things to continue to exist, organisms must reproduce
-Makes one or more organism
-Type of reproduction :
1- Division (bacterias),
2-Specialized cell ( humans, animals or multicellular).
- Some can reproduce hundreds at a time(frogs)
Characteristics
of life
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
Fourth characteristics of life Responses to stimuli: -Internal stimuli ( You feel hungry and then look for food) -External stimuli ( many plants will grow toward light)
Characteristics
of life
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
Fifth characteristics of life Homeostasis: -Organism ability to maintain steady internal conditions when outside change -Examples: Cell´s condition for a healthy organism
Characteristics
of life
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
Sixth characteristics of life Energy: -Organism use energy for different activities(transport substances, make new cell, perform chemical reactions) - Energy cycle: Organism energy depends on other organism
Characteristics
of life
Chapter : Classifying and exploring Lesson # 1: Characteristics of life Objective: Observe a list of events that characterize a living thing from a non-living thing.
How did Aristotle had organized organism ?
- Placed organism into two groups: plants and animals
- Classified animals based on presence of red blood , the animals environment and the shape and size.
- Classified plants according to the structure ,size, tree, shrub ,or an herb
Classifying
living things
Chapter : Classifying and exploring Lesson # 2: Classifying organism Objective:. Classify organism according to their physical structure and characteristics
Robert Whittaker proposed five kingdom system: - Bacteria: unicellular organism
- Archaea: Unicellular organism that
lives in extreme environment
- Protista: Unicellular, more complex than archaea and bacteria
- Fungi: Unicellular or multicellular , absorb energy
- Plantae: multicellular , make their own food
- Animalia: multicellular take their own food
Determining
kingdoms
Chapter : Classifying and exploring Lesson # 2: Classifying organism Objective: Classify organism according to their physical structure and characteristics
Determining Domains Systematics proposed kingdoms divided into two groups: - Prokarya : Bacterias,
Archaea
- Eukarya: Protista,Fungi,Plantae, Animalia
Determining
Domains
Chapter : Classifying and exploring Lesson # 2: Classifying organism Objective: Observe a list of events that characterize a living thing from a non-living thing.
-Binomial Momenclature: gives each organism a two-word scientific name Example: Ursus arctos(brown bear)
Dichotomous Keys - Descriptions arranged in pairs Cladograms - Relationship among organism and ancestors
Scientific Name
Chapter : Classifying and exploring Lesson # 2: Classifying organism Objective:Classify organism according to their physical structure and characteristics
Dichotomus keys:
Scientific Name
Chapter : Classifying and exploring Lesson # 2: Classifying organism Objective:Classify organism according to their physical structure and characteristics
Cladograms keys:
Scientific Name
Chapter : Classifying and exploring Lesson # 2: Classifying organism Objective:Classify organism according to their physical structure and characteristics
Figure 1
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Figure 3
Figure 2
Figure 4
Figure 1
Dd
Figure 3
Figure 2
Figure 4
