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Classifying Organisms

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Presentation on theme: "Classifying Organisms"— Presentation transcript:

1 Classifying Organisms
Chapter 7 Classifying Organisms

2 How do scientists classify organisms?
Chapter 7 Lesson 1 How do scientists classify organisms?

3 Kingdom – largest group in the biological classification system.
Dichotomous Key: a tool that uses a series of questions to identify organisms

4 6 Kingdoms eubacteria archaebacteria protist fungi plants animals

5 Which organism has 2 kingdoms?
bacteria What are the 2 types of bacteria? archaebacteria (ancient) & eubacteria (most common)

6 Archaebacteria & Eubacteria
smallest organism have a single cell do NOT have a nucleus most numerous kind of organism ex: cocci, bacilli, spirochetes Protists may have a single cell or multi-cells has a nucleus have similar characteristics to fungi, plants, or animals ex: protozoa, algae, slime mold Fungi has a nucleus absorbs their food and breaks down other organisms grows quickly and reproduces through spores.

7 Chapter 7 Lesson 2 How are plants classified?

8 Big Idea: All plants are multicellular. Almost all make their own food using the Sun’s energy. Plants are classified according to the ways they transport water and reproduce.

9 Plant Kingdom multi-celled have tissue & organs have cell walls & chloroplasts make their own food Plant adaptation: characteristic that allows a plant to survive. cactus thick waxy skin holds water spines protects

10 Plant Kingdom Nonvascular Vascular seed seedless
(absorbs water; must live near water) ex: moss (tube transports water & gives support) seed seedless Gymnosperms (produces seeds) Angiosperms (produces flowers) Ferns (has spores)

11 How are animals classified?
Lesson 3 How are animals classified?

12 Animal Kingdom have many need eat most move most reproduce cells oxygen food from place to place sexually Animal Kingdom Invertebrates: no backbone Vertebrates: have a backbone

13 Invertebrates largest number of animal species have different kind of body symmetries Symmetry: matching forms on opposite sides of a dividing line Bilateral: (straight down the middle) ex: butterfly Radial: (repeats around a center) ex: starfish

14 Invertebrates Examples
Cnidarians = Echinoderms = Arthropods = Mollusks = Worms = jellyfish, coral starfish, sea urchin lobster, crab, insects clam, snail, octopus flatworm, earthworm

15 Vertebrates may be cold-blooded or hot-blooded – this relates to how an animal maintains its body temperature Cold-blooded – body temperature depends on the environment outside the body Fish Amphibians: begins life in water, but lives partly on land examples: frog, toad Reptiles examples: snake, alligator Warm-blooded – inside body temperature stays the same Birds Mammals examples: human, bear, lion

16 Animal Kingdom Invertebrates Vertebrates cnidarians echinoderms
arthropods mollusks worms cold-blooded warm-blooded fish amphibians reptiles birds mammals

17 Study Guide Animals that have a backbone are called ________________ .
______________ are animal-like protists. The tool used to identify organisms based on contrasting pairs of characteristics is __________________. ______________ are vertebrates with smooth, moist skin that begins life in the water, but live part of the time on land. The highest level of biological classification is _____________. Animals that do not have a backbone are called __________________. vertebrates Protozoa dichotomous key Amphibians kingdom invertebrates

18 Gymnosperms produce reproductive structures called __________.
Single-celled organisms whose cells do not contain nuclei are called __________________. Fungi obtain food by ____________________. Define vascular: _____________________________________ Define nonvascular: __________________________________ Name 3 protists groups: cones bacteria absorbing nutrients from the environment. has a water transport system does not have a water transport system; absorbs nutrients Protozoa (animal-like) Algae (plant-like) Slime mold (fungus-like)

19 13. Six Kingdoms of Classification
eubacteria archaebacteria protists fungi plants animals

20 14. How are plants and fungi different?
Plants make their own food. Fungi absorbs nutrients from the environment. 15. Compare & contrast angiosperms and gymnosperms? Angiosperm produces fruits & flowers. Gymnosperm produces cones/seeds. Both are vascular plants & have seeds.

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