Do Now. Turn in Revolution reaction sheet I need 4 volunteers to pass back notebooks

Transkript

1 Do Now Turn in Revolution reaction sheet I need 4 volunteers to pass back notebooks

2 Do Now What is your reaction to the picture?

3

4 4 Major Topics in Biology Ecology Evolution Genetics Human Body

5 Objective I will Understand the terms adaptation and fitness Explain the concept of survival of the fittest

6 Adaptation and Fitness

7 Question Will his children be born buff?

8 Lamarck ( ) First to propose that species change over time into new species Inheritance of acquired characteristics Physical changes an organism acquired during its lifetime are passed on to the next generation

9 Points, points, points!

10 Points, points, points! What will happen to the individuals with most points? What will happen to the individuals with the least amount of points?

11 Darwin Father of evolution Author of Origin of the species Proposed that species change, or evolve, in response to nature

12 Based on what you just learned about Lamarck and Darwin, what can you tell me about this picture?

13 The struggle for existence Members of each species compete for resources Some individuals will outcompete others. Why?

14 I understand everything Some concepts confuse me You lost me

15 Evolution by Natural Selection Work with your elbow partner to figure out the answers You have 10 minutes

16 Adaptation Any inherited characteristic that increases an organism s chance of survival Examples: camouflage, running fast, poisonous skin, etc.

17 Examples of Adaptations Organism Adaptation Explanation

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19 Fitness Ability of an individual to survive and reproduce in a specific environment

20 Fitness

21 Survival of the fittest Process where individuals that are better suited to their environment survive and reproduce most successfully

22 Which of the following DOES NOT contribute to the survival of the fittest? 1. The ability of a lion to run fast 2. A large number of offspring 3. A fast bird that can escape predators more easily 4. Mating with different species

23 Evolution Change of heritable traits over time

24 Do populations or individuals evolve? Think: Pair: Share:

25 Evolution Populations of organisms change over many generations to be more suited to their environment

26 What happens to those who are are suited for their environment?

27 Activity: The Deep Sea

28 Focus Question: Why do deep sea creature organisms look so different? v=mrsu65bb9x4

29 Deep Sea Creatures Write down 3 physical characteristics that were common amongst these organisms

30 The Deep Sea An Introduction

31 The deep ocean is characterized by an area where sunlight begins to disappear. Because of this, primary production is limited. What process is missing? Deep ocean organisms are at a serious disadvantage compared to organisms that live near the surface because they lack nutrients in deeper waters. The primary limiting factor is food (nutrients).

32 Abiotic Factors Well, hello there!

33 How deep is the deep sea?

34 Temperature Lack of sunlight: as depth increases, the temperature drops close to freezing Why will low temperature be a problem?

35 Adaptation to Temperature Imagine you are a deep sea creature. Draw a body structure that would help you survive the vast amount of pressure.

36 Pressure The deepest parts of the ocean put extreme amounts of pressure on organisms. (14,700 psi) The most obvious example of how pressure has affected fish is in the absence of a gas bladder. Why does the pressure increase as you go deeper into the ocean?

37 Investigation i=6c1_ Imagine you are a deep sea creature. Create a body structure that would help you survive the vast amount of pressure.

38 Adaptation to Pressure Imagine you are a deep sea creature. Draw a body structure that would help you survive the vast amount of pressure.

39 Pressure (Cont d) Other adaptations besides the lack of gas bladder include: Lack of Scales Weak Bones Loss of Muscle Tissue

40 LIGHT The lack of light creates some unique challenges for the organisms living in the deep ocean. The first of these, is of course, the lack of primary production. Because there is little primary production, there is not only very little food, but also very little oxygen.

41 When light hits water, its many colors begin to be absorbed in the water. Mr. Roy G. Biv will help you remember the spectrum of light. As light is absorbed, the color that penetrates the deepest is blue.

42 Bioluminescence The production of light by a living organism. Organisms Use Bioluminescence in a Variety of Ways

43 The color of choice for bioluminescence is blue Why do you think this will be the color of choice?

44 Some organisms choose to use red light because it is hard to see. Because red light is not found in the deep, many fish cannot see it. This makes it the perfect tool to spy on other fish.

45 Check for understanding Which color will organisms in the deep sea be completely blind to? 1. Blue 2. Violet 3. Red 4. Green

46 Bioluminescent Bay UPSlU

47 Practice Create a unique organism that has ADAPTED to the deep sea! What STRUCTURES help this organism adapt to the pressure, lack of sunlight, low temperatures? Draw a picture and create a name Include a description of your organism

48 Rubric Level 4: Creature has structures that help it adapt to pressure, temperature, and lack of food and oxygen (no sunlight). Explanation is clear and uses scientific vocabulary (use your notes) Drawing is labeled and is representative of description

49 Exit Slip: Determine which statement is False and explain why the statement is incorrect. 1. Physical changes an organism acquired during its lifetime (e.g. buff-ness) are passed on to the next generation 2. Individuals go through evolution. 3. The ability of an individual to survive and reproduce is called fitness.