BIG IDEA I The process of evolution drives the diversity and unity of life.
Life Science Big Idea
-
Upload
lewis-chase -
Category
Documents
-
view
42 -
download
1
description
Transcript of Life Science Big Idea
![Page 1: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/1.jpg)
Classifying OrganismsLesson 1:
How Do Scientists Classify Organisms?
5th Grade ScienceMr. Hughes
![Page 2: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/2.jpg)
Life Science Big Idea
• Students will understand how scientists classify living things into six kingdoms based on internal and external structures.
![Page 3: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/3.jpg)
Life Science Concept Map
Scientists classify organisms accordingto how closely they
are related.
All organisms can beclassified into one of
six kingdoms: archaebacteria, eubacteria
protists, fungi, plants, and
animals.
All living things are made of cells. Multicellularorganisms have many
types of cells.
![Page 4: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/4.jpg)
Kingdoms of Living Things
• Biologists use a scientific system that organizes living things into groups.
• Scientists use 6 kingdoms: archaebacteria, eubacteria, protists, fungi, plants, & animals.
• Organisms are classified according to internal and external characteristics.
• Scientists use dichotomous keys to help identify organisms.
![Page 5: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/5.jpg)
Classifying Most Living Things
Single-celled?
NOYES
Makes its own food?
Nucleus incell?
NO YESYES NO
Eats food?NO
YES
Fungi Animal
Plants
Protists Bacteria
![Page 6: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/6.jpg)
Bacteria• Bacteria are among the smallest of organisms and are
the most numerous.
• Bacteria can only be seen with a microscope.
• Bacteria are single-celled and do not have a nucleus.
• Bacteria are divided into 2 kingdoms: archaebacteria and eubacteria.
-Cocci: round shape; join together to form chains
-Bacilli: rod-shaped; found in soil and water
-Spirochetes: look like worms; wriggle when seen
under a microscope
• Archaebacteria are the oldest known
organisms.
![Page 7: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/7.jpg)
Protists• Most protists are single-celled; all protist
cells have a nucleus.
• Some protists share characteristics with fungi, plants, or animals.
• Animal-like protists are call protozoa:
-amoebas: uses false foot to move
-can’t make own food, so take from surroundings
![Page 8: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/8.jpg)
Protists• Plant-like protists use energy from sun to create
own food-algae: adds oxygen to air
http://simply-science-nbep.blogspot.com/2011/06/algae-vs-plants.html - to read how algae and plants differ.
• Fungi-like protists have harmful effects on plants and animals.-slime mold: ooze slowly over dead trees and piles of fallen leaves.
• Paramecium moves slowly using tiny, hair-like structures called cilia that cover most of its body-cilia work like oars to move paramecium
forward and backwards
![Page 9: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/9.jpg)
Fungi• Fungi can be single-celled or multicellular
organisms; all fungal cells have a nucleus.
• Fungi cell walls are made of the same substance that forms insect shells.
• Fungi absorb nutrients from their environment by decomposing other organisms.
• Fungi grow fast and reproduce through spores.
• Mushrooms are examples of fungi.
![Page 10: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/10.jpg)
Pictures of Protists
Slime Mold - Protist
Algae- Protist
Amoeba- Protist
Multicellular- ProtistSeaweed
![Page 11: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/11.jpg)
Mushroom Life Cycle
cap
stalk
spores
mycelium
![Page 12: Life Science Big Idea](https://reader036.fdocuments.net/reader036/viewer/2022062309/5681372e550346895d9eba2e/html5/thumbnails/12.jpg)
Mushroom Life Cycle(continued)
1. A mushroom with a stalk and cap is the above-ground part of certain fungi species.
2. Spores are released from the mushroom cap.
3. Spores grow on a surface and form the mycelium.
4. The mycelium produces mature mushrooms.