Introduction to Plants PPT Questions

Introduction to Plants
ppt Questions

Early Ancestors

1. The first habitat for plants on earth was _____________.

2. Which algal group is most related to early land plants?

3. What is this group of algae called?

4. List 5 similarities between algae and terrestrial plants.

     a.

     b.

     c.

     d.

     e.

5. List 5 helpful adaptations aquatic plants have by being surrounded by water.

     a.

     b.

     c.

     d.

     e.

6.Complete the following table explaining how terrestrial plants solved the move onto land.

 

Plant Adaptations to land
Problems: Solutions:
Need Minerals
Gravity
Increase in Height to get Light
Adaptations for drier environment
Reproduction

 

How Are Plants All Alike

7. All plants are ____________________.

8. Plants can make their own food by a process called ____________________.

9. Since plants make their own food they are called _________________.

10. Plants contain what type of chlorophyll?

11. Where is chlorophyll found in plants?

12. What surrounds the outside of all plant cells and what is it composed of?

13. How do plants store their reserve food?

14. The life cycle of plants is known as __________________ of _________________.

15. The dominant stage of the plant is the diploid (2n) ________________ stage.

16. The eggs and sperm are produced during the haploid (1n) ________________ stage.

17. The gametophyte stage produces a multicellular plant ______________ that is protected inside an ____________ ___________.

18. The sporophyte stage produces _____________ by _____________.

19. Haploid spores undergo ______________ to produce the _______________ stage.

20. The gametophyte stage makes _____________ called the _________ and ___________.

21. Label the diagram of alternation of generation. Include the sporophyte and gametophyte generations, the chromosome number (2n or 1n), and where mitosis and meiosis occur.

Plant Divisions

22. Plants are divided into __________ groups based on the presence or absence of an ___________ _____________ ___________ for carrying water and dissolved _____________.

23. What is the transport system for water and minerals called?

24. ______________ plants lack vascular tissue and are called _______________.

25. In what type of environment must nonvascular plants live?

26. Give an example of a bryophyte.

27. Nonvascular plants can’t grow as tall as vascular plants. Explain why.

 

28. The cells of nonvascular plants must be in _________ contact with water because water moves by _______________ from cell to cell.

29. How does the sperm get to the egg in nonvascular plants?

30. Name 3 divisions of nonvascular plants and give and organism found in each division.

     a.

     b.

     c.

31.Vascular plants are also called _______________.

32. What are the 2 subdivisions of vascular plants?

     

33. Name 4 divisions of seedless vascular plants and give an example of a plant in each group.

     a.

     b.

     c.

     d.

34. Name the 2 groups of seed-bearing vascular plants.

 

35. Gymnosperms have ____________ seeds found inside cones.

36. Angiosperms have ___________ to attract ____________ so seeds can be produced.

37. Name the division known as conifers and tell several plants in this group/

 

38. Name 2 other divisions of gymnosperms and tell a plant in each group.

     a.

     b.

39. Name the oldest living plant.

40. Name the tallest living plant.

41. What group are these 2 plants in?

42. Angiosperms are called ____________ plants.

43. How are seeds formed in angiosperms?

 

44. Where is the ovary found?

45. Name the male and female parts of a flower.

46. How are fruits formed?

47. Angiosperms are the division ______________.

48. What are the 2 subgroups of Anthophyta.

49. Describe the characteristics of monocots.

 

50. Describe the characteristics of dicots.

 

 

 

 

Homeostasis Worksheet Ch5 BI

 

Homeostasis & Transport

 

Section 5-1 Passive Transport

1. What is the purpose of the cell membrane?

2. Explain passive transport.

3. What is the simplest type of passive transport?

4. In which direction does diffusion occur?

5. What is a concentration gradient?

6. Sugar dissolving in water is an example of _______________________.

7. What supplies the energy for diffusion?

8. Molecules are constantly _____________________.

9. What is meant by equilibrium?

10. Do molecules stop moving when equilibrium is reached? Explain.

11. List three things that determine if a molecule will be able to diffuse across a membrane.

12. Name the 2 parts of a solution.

13. Define osmosis. Is it passive or active transport?

14. The direction water moves across a cell membrane depends on the concentration of what on either side of the cell membrane?

15. Explain what is true about solutes if the outside of the cell is hypotonic to the cytosol? Which way does water move?

16. Explain the solute conditions if the outside is hypertonic to the cytosol. Which way does water move?

17. What occurs if the solute concentration on each side of the cell membrane is isotonic?

18. If the inside & outside of a cell are both isotonic, does water still move across the cell membrane? Explain.

19. If the inside of the cell is hypotonic, the outside will be _________________________.

20. Water tends to diffuse from ____________________ to ___________________ solutions.

21. How does a unicellular paramecium get rid of its excess water? Is energy used?

22. Many cells in multicellular organisms have _________________ pumps to prevent them from taking in too much water in hypotonic solutions.

23. What structure around the outside of plant cells keeps hem from rupturing from too much water?

24. What is turgor pressure & how does it help plant cells?

25. What happens to plant cells placed in a hypertonic solution? Name this process.

26. What is cytolysis & what causes it?

27. Another type of passive transport is __________________________ diffusion.

28. Explain how carrier proteins help in facilitated.

29. Sketch the changes that take place in a carrier protein as it helps molecules move across the cell membrane.

30. What sugar moves across the cell membrane by facilitated diffusion?

31. What are ion channels & are they used in passive or active transport?

32. Name 4 ions that cross the cell membrane through ion channels.

33. Why can’t these ions diffuse across the lipid bilayer of the cell membrane?

34. Ion channels may be always ________________ or have ___________________.

35. Name 3 stimuli that open & close gated channels.

Section 5-2 Active Transport

36. Define active transport.

37. Why are carrier proteins in the cell membrane that are used for active transport called “pumps”?

38. What is the best-known carrier protein pump in animal cells?

39. What 2 ions move up their concentration gradient in this pump?

40. ___________________ ions are pumped out, while ______________ ions are pumped into the cell.

41. Is energy required for active transport? Explain.

42. Sodium ions are exchanged for potassium ions at a ____________ to ____________ ratio.

43. Name 2 processes used to move macromolecules & food particles across the cell membrane. Is energy required?

44. Explain how cells move large particles into the cell by endocytosis.

45. Name & describe the 2 types of endocytosis.

46. How do phagocytes protect cells?

47. What process moves large materials such as wastes & proteins out of the cell?

BACK

 

How Surface Area to Volume Ratio Limits Cell Size

 

How Surface Area to Volume Ratio Limits Cell Size

  1. A cell is a metabolic compartment where a multitude of chemical reactions occur.
  2. The number of reactions increase as the volume of metabolic volume within a cell increases. (The larger the volume the larger the number of reactions)
  3. 3.All raw materials necessary for metabolism can enter the cell only through its cell membrane.
  4. The greater the surface area the larger the amount of raw materials that can enter at only one time.
  5. Each unit of volume requires a specific amount of surface area to supply its metabolism with raw materials. The amount of surface area available to each unit of volume varies with the size of a cell.
  6. As a cell grows its SA/V decreases.
  7. At some point in its growth its SA/V becomes so small that its surface area is too small to supply its raw materials to its volume. At this point the cell cannot get larger.

 

 

Human Hand Adaptations

 

Human Hand Adaptation

Introduction:        Living things have bodies that are adapted for the places they live and the things they do. Fish have gills so that they can remove oxygen that is dissolved in water. Most plants have green leaves which contain chlorophyll so that they can make food. Jellyfish have stinging cells to capture prey. Birds have hollow spongy bones so that they will be light enough to fly. Arctic animals have layers of fat and thick coats of fur to keep warm in the frigid Arctic climate. There are hundreds of examples of ways that organisms are adapted for a successful lifestyle.       Humans, too, are adapted for the things they do. One of our adaptations is our hand. Humans, as well as monkeys, gorillas, and other primates, have a hand that can grasp objects. We are able to grasp objects because of our opposable thumb. When students first hear or read about the opposable thumb during discussions of human evolution, they may perceive it as an anatomical fact with little seeming importance. In this activity, students will discover which of their simplest daily activities are possible only because of their opposable thumbs, which activities take longer without the use of an opposable thumb, and what sort of human activities would not be likely in the absence of an opposable thumb.   In this lab exercise, you will perform several common actions. Then you will change your hand so that it resembles that of a non-primate animal. You will determine whether or not you can successfully perform the same actions. This will demonstrate how the human hand is adapted for the actions it performs. You will work with a partner to do this exercise.   Materials: (per group)

  • masking tape
  • scissors
  • paper clips
  • zip-lock storage bag
  • plastic fork and knife
  • small amounts of food items to be cut
  • pencil
  • jar with screw-on lid
  • paper
  • roll of tape
  • balloons
  • comb
  • book
  • lace-up shoe
  • clock with a second hand
  • Piece of yarn or string
  • balloon
  • clothes with zippers & buttons

Procedure: Using masking tape, have your partner tightly tape each of your thumbs to the palm of the hand. Then, try to complete the tasks that are listed below. Be careful not to use your thumbs. Have your partner record on your data table how long it takes to do each task with your thumb taped and then with your thumb free. If an activity takes longer than 2 minutes, record the event as unsuccessful . After completing each item, write out the answers to the following questions:

  • Is the task more difficult with or without an opposable thumb?
  • How did you have to change your usual technique in order to complete this task?
  • Do you think organisms without opposable thumbs would carry out this task on a regular basis? Why or why not?

Tasks:

  1. Pick up a single piece of paper. Put it down on your desk.
  2. Pick up a pen or pencil from the table top. Use it to write your name on the piece of paper.
  3. Open a book. Turn single pages in the book.
  4. Unscrew a bottle cap or jar cover.
  5. Use a fork and knife to cut a food item into small pieces.
  6. Tear off a small piece of tape.
  7. Turn on the water faucet. (Complete activity #8!) Turn it off.
  8. Moisten a paper towel and wash and dry the desktop.
  9. Sharpen a pencil.
  10. Cut a circle out of a piece of paper using scissors.
  11. Pick up all the scraps from activity #10 and throw them into the recycling box.
  12. Comb your hair.
  13. Open a door.
  14. Pick up one paper clip. Clip a pile of papers together.
  15. Tie your shoelaces.
  16. Button several buttons.
  17. Zip up your jacket.
  18. Blow up a balloon and tie it.
  19. Tie a knot in a piece of string.
  20. Close a zip-lock bag.

Data:

Table 1 – Time It Took To Perform Various Tasks

 

Task Time Taken for Event: Task Difficulty With Taped Thumb
(More/Less)
Modification Made to complete Task
Thumb Free Thumb Taped
Pick up paper
Write name
Turn book pages
Open jar
Use knife & fork
Tear off tape
Turn faucet on & off
Clean desk top
Sharpen a pencil
Cut out a circle
Pick up the scraps of paper
Comb hair
Open door
Clip papers together
Tie shoelaces
Button & unbutton garment
Use zipper
Blow up & tie balloon
Knot string
Close zip-lock bag

Conclusion:   1. Explain why dog and cat paws are not adapted for doing the six actions you tested.     2. What are cat and dog paws adapted for?     3. Describe how your hand is adapted for doing the actions you tested.       4. You have an opposable thumb. Explain what this means.     5. Why do you feel that human hand adaptations have helped to make humans such a successful species on earth?

 

Identifying Controls and Variables

Identifying Controls and Variables

 

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they’re supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

 

Identify the:

1. Control Group

2. Independent Variable

3. Dependent Variable

4. What should Smithers’ conclusion be?

 

5. How could this experiment be improved?

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of “treatment” there is no change in the appearance of the green slime on either side of the shower.

 

6. What was the initial observation?

Identify the-
7. Control Group

8. Independent Variable

9. Dependent Variable

10. What should Homer’s conclusion be?

 

 

 

Bart believes that mice exposed to microwaves will become extra strong (maybe he’s been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the micro waved mice were able to push the block away. 7 out of 10 of the non-micro waved mice were able to do the same. Identify the-
11. Control Group12. Independent Variable

13. Dependent Variable

14. What should Bart’s conclusion be?

15. How could Bart’s experiment be improved?

Krusty was told that a certain itching powder was the newest best thing on the market, it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the Experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported to have itches for 45 minutes. Identify the-
16. Control Group17. Independent Variable

18. Dependent Variable

19. Explain whether the data supports the advertisements claims about its product.

Lisa is working on a science project. Her task is to answer the question: “Does Rogooti (which is a commercial hair product) affect the speed of hair growth”. Her family is willing to volunteer for the experiment.

20. Describe how Lisa would perform this experiment. Identify the control group, and the independent and dependent variables in your description.