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EXPLORE: Introduce your students to the dichotomous key

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Presentation on theme: "EXPLORE: Introduce your students to the dichotomous key"— Presentation transcript:

1  HAPPY MONDAY  Bellwork: Complete and write out the steps for organism “B” – The snail.
EXPLORE: Introduce your students to the dichotomous key. Together, use the key to identify the group to which each organism belongs. Assign the student reading. You may also wish to direct your students’ attention to the “Kingdoms” animation which is accessible from the multimedia lesson home page.

2 “Walking Review” Page 53 of your I.A.N.

3 Kingdom Phylum Class Order Family Genus Species Organism Cat Wolf Fly
Animalia Phylum Chordata Arthropoda Class Mammalia Insecta Order Carnivora Diptera Family Felidae Canidae Muscidae Genus Felis Canis Musca Species F. domesticus C. lupus M. domestica Have students study this chart. The next slide lists three questions to answer using this chart. You may have to advance to the next slide, let students read the question and then come back to the chart so they can find the answer.

4 What type of animal is Musca domestica?
From the table, which 2 animals are most closely related? 3. At what classification level does the evolutionary relationship between cats and wolves diverge (become different)?

5

6 What is the scientific name for the Canada goose?
Explain which two organisms are the most closely related. Which taxons do the human and goose have in common?

7

8 At which taxon do the lion and bobcat diverge?
Which kingdom does C. comatus belong to? Which taxons do the lion and bobcat have in common? What is the scientific name for the lion?

9 11. Describe 2 conclusions that can be made from this information.
African Buffalo Burchell’s Zebra Grant’s Gazelle Animalia Chordata Mammalia Artiodactyla Bovidae Synceruscaffer Perissodactyla Equidae Equusburchellii Nangergranti 11. Describe 2 conclusions that can be made from this information.

10 The information below describes the most specific levels of classification that the mushroom sea squirt, Sycozoa gaimardi, shares with four other organisms. 12. To which of the four organisms is the mushroom sea squirt most closely related? The mushroom sea squirt is in the same class as the common sea grape. The mushroom sea squirt is in the same family as the blue spot ascidian. The mushroom sea squirt is in the same order as the white speck tunicate. The mushroom sea squirt is in the same phylum as the starry skate.

11 13. Which of the beetles above must belong to the same family?

12 Whales Most Closely Related
Student Whales Most Closely Related Reason 1 killer whale and gray whale They are both mammals. 2 humpback whale and pygmy right whale They are both whales. 3 fin whale and minke whale They are both in the same genus. 4 North Atlantic right whale and bowhead whale They are both in the same family. 14. Four students researched the classifications of the following eight whales: killer whale, Orcinus orca gray whale, Eschrichtius robustus humpback whale, Megaptera novaeangliae pygmy right whale, Caperea marginata fin whale, Balaenoptera physalus minke whale, Balaenoptera acutorostrata North Atlantic right whale, Eubalaena glacialis bowhead whale, Balaena mysticetus The students were asked which two whales are most closely related and why. The table below summarizes the students’ answers. Based on the classifications, which student gave the correct answer to the question?

13 15. Which two organisms are most closely related?
California Sea Lion Galápagos Sea Lion New Zealand Sea Lion Kingdom Animalia  Animalia Phylum Chordata  Chordata Class Mammalia  Mammalia Order Carnivora  Carnivora Family Otariidae  Otariidae Genus Zalophus Phocarctos Species californianus wollebaeki  hookeri 15. Which two organisms are most closely related? 16. Which taxa do all three organisms share?

14 The Ursidae family of animals includes the giant panda, the brown bear, the polar bear, and the spectacled bear. Which of the following characteristics best helps classify these bears into genus and species levels?   A.eating habits   B.gene sequences   C.method of reproduction   D.location of natural habitat

15 Scientists compared the DNA sequence of a gene in four mammals
Scientists compared the DNA sequence of a gene in four mammals. A portion of the gene’s DNA sequence in each mammal is shown below. 18. Based on the sequence data, which of the mammals are most closely related to each other? Mammal DNA Sequence 1 TCTCAACTACAA 2 TCTCAGCTGCAA 3 ACTCAGCTACAA 4 TCTCAGCTGCAG

16 19. Identify the organism pictured below

17 20. Identify the organism pictured below

18 21. Identify the organism pictured below

19 Answer Key

20 Kingdom Phylum Class Order Family Genus Species Organism Cat Wolf Fly
Animalia Phylum Chordata Arthropoda Class Mammalia Insecta Order Carnivora Diptera Family Felidae Canidae Muscidae Genus Felis Canis Musca Species F. domesticus C. lupus M. domestica Have students study this chart. The next slide lists three questions to answer using this chart. You may have to advance to the next slide, let students read the question and then come back to the chart so they can find the answer.

21 What type of animal is Musca domestica?
Fly 2. From the table, which 2 animals are most closely related? Cat and Wolf At what classification level does the evolutionary relationship between cats and wolves diverge (become different)? Family

22

23 What is the scientific name for the Canada goose?
Branta canadensis 5. Explain which two organisms are the most closely related. Lake Darner and Mosquito Which taxons do the human and goose have in common? Kingdom and Phylum

24

25 At which taxon do the lion and bobcat diverge? Genus
8. Which kingdom does C. comatus belong to? Fungi 9. Which taxons do the lion and bobcat have in common? Domain, Kingdom, Phylum, Class, Order, and Family 10. What is the scientific name for the lion? Panthera leo

26 11. Describe 2 conclusions that can be made from this information.
African Buffalo Burchell’s Zebra Grant’s Gazelle Animalia Chordata Mammalia Artiodactyla Bovidae Synceruscaffer Perissodactyla Equidae Equusburchellii Nangergranti 11. Describe 2 conclusions that can be made from this information. Refer to chart

27 The Blue-Spot Ascidian
The information below describes the most specific levels of classification that the mushroom sea squirt, Sycozoa gaimardi, shares with four other organisms. 12. To which of the four organisms is the mushroom sea squirt most closely related? The Blue-Spot Ascidian The mushroom sea squirt is in the same class as the common sea grape. The mushroom sea squirt is in the same family as the blue spot ascidian. The mushroom sea squirt is in the same order as the white speck tunicate. The mushroom sea squirt is in the same phylum as the starry skate.

28 13. Which of the beetles above must belong to the same family?

29 Whales Most Closely Related
Student Whales Most Closely Related Reason 1 killer whale and gray whale They are both mammals. 2 humpback whale and pygmy right whale They are both whales. 3 fin whale and minke whale They are both in the same genus. 4 North Atlantic right whale and bowhead whale They are both in the same family. 14. Four students researched the classifications of the following eight whales: killer whale, Orcinus orca gray whale, Eschrichtius robustus humpback whale, Megaptera novaeangliae pygmy right whale, Caperea marginata fin whale, Balaenoptera physalus minke whale, Balaenoptera acutorostrata North Atlantic right whale, Eubalaena glacialis bowhead whale, Balaena mysticetus The students were asked which two whales are most closely related and why. The table below summarizes the students’ answers. Based on the classifications, which student gave the correct answer to the question?

30 15. Which two organisms are most closely related?
California Sea Lion Galápagos Sea Lion New Zealand Sea Lion Kingdom Animalia  Animalia Phylum Chordata  Chordata Class Mammalia  Mammalia Order Carnivora  Carnivora Family Otariidae  Otariidae Genus Zalophus Phocarctos Species californianus wollebaeki  hookeri 15. Which two organisms are most closely related? California Sea Lion and Galapagos Sea Lion 16. Which taxa do all three organisms share? Kingdom, Phylum, Class, Order, Family

31 The Ursidae family of animals includes the giant panda, the brown bear, the polar bear, and the spectacled bear. Which of the following characteristics best helps classify these bears into genus and species levels?   A.eating habits   B.gene sequences   C.method of reproduction   D.location of natural habitat

32 Scientists compared the DNA sequence of a gene in four mammals
Scientists compared the DNA sequence of a gene in four mammals. A portion of the gene’s DNA sequence in each mammal is shown below. 18. Based on the sequence data, which of the mammals are most closely related to each other? Mammals 2 and 4 Mammal DNA Sequence 1 TCTCAACTACAA 2 TCTCAGCTGCAA 3 ACTCAGCTACAA 4 TCTCAGCTGCAG

33 19. Identify the organism pictured below Albizia julibrissin

34 20. Identify the organism pictured below Pusa hispida

35 21. Identify the organism pictured below Phylum Platyhelminthes

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