Preap Fungi Study Guide

 

Fungi Review   
1. Fungi Differ from plants in important ways:  Fungi Lack _______________________ and are Not _______________________________.  Fungi Never Reproduce by _____________________.  The cell walls of fungi are made of ___________________, not __________________________, as are the cell walls of Plants.

2. _____________________, a tough, flexible material, also makes up the hard outer skeleton of insets.

3. Fungi have FOUR Characteristics in common:

A.___________________________________________________________________
B.___________________________________________________________________
C.___________________________________________________________________
D.___________________________________________________________________

4. All fungi are ______________________________, obtaining their nutrition from other organisms.

5. Most fungi are ______________________________ and obtain their nutrients by digesting and absorbing nutrients from _______________________ organisms.

6. Some fungi are _______________________ and obtain their nutrients from living host.  A few fungi are actually _____________________, able to trap and kill prey.

7. Fungi include _____________________ and __________________ organisms.  Yeast is a typical ___________________________ fungi.

8. Most fungi are ____________________________ organisms.  The body of a fungus consists of tiny filaments called ______________________________.

9.   _________________________ are tiny tubes filed with __________________  and _____________________ that form the body of a fungus.  Hyphae are the __________________, _________________ parts of _______________________ fungi.

10. Hyphae are divided into segments by walls called _____________________.  The _________________ have ________________ which cytoplasm and organelles can move from segment to segment.

11. The mass of tangled, interwoven hyphae that form the body of a fungus is called a _________________________.

12. An organism that digest dead organisms and absorbs their nutrients is called a _____________________________________________.

13. Tiny tubes filled with cytoplasm and nuclei that form the body of a fungus are called _________________________________.

14. Septa are the cross-walls that divide __________________________________.

15. Hyphae tangle and interweave to form a mass know as a _____________________.

16. Asexual reproduction, which produces offspring that are __________________  ___________________ to the parent, is most common when ____________________ and _____________________ are ____________________.

17. Sexual reproduction occurs in fungi mostly when _______________________ or ________________________ become __________________.

18.   __________________ are the means by which fungi are dispersed.  Each spore contains a ______________________ and dehydrated __________________ surrounded by a _____________________  ____________________.

19. The reproductive structures of fungi that produce spores are ___________________ ___________________.

20. A fruiting body consists of a _____________________ and a _______________ in which spores are produced.  In a Mushroom, the ________________ contains thousands of ____________________  ____________________.

21. All the spores released by fungi are ___________________________ (1n).

22. Spores cannot move themselves, but can be dispersed by _______________, ___________________, ________________, or ____________________.

23. There are NO ________________ or ________________ Fungi.  Instead, the TWO mating types are called the ___________________ and the ______________________.

24. Fungi are grouped in one of Three Phyla:  _____________________, common molds; _______________________, club fungi; _________________________, sac fungi; and a group called _______________________ or imperfect fungi.

25. Common molds have No ____________ in their hyphae.

26. The part of hyphae that anchor a fungus to its source of nutrients are called ________________________.  _____________________ resemble the _____________ of plants but lack the specialized tissues of true roots.

27.   ___________________ are the hyphae that connect groups of rhizoids.  ________________ transport the nutrients absorbed by ________________ throughout the ____________________.

28. The study of fungi is called _______________________________.

29. Hyphae whose cells are divided by septa are called ________________________  ________________________.

30.  ___________________________ is a special Asexual process.  __________________ is the formation of a small, bud-like cell from a larger cell.

31. The one characteristic shared by all imperfect fungi is an absence of  ________________________________  ________________________________.

32. A ____________________ is a symbiotic association between a _______________________ and a ___________________________ organism.

33. ____________________________ are mutualistic associations between a __________________ and the _________________ of a plant.

34. The process in which a smaller cell breaks away from a larger cell in some yeasts is called __________________________.

35. Fungi help return nutrients to the ecosystem by acting as _________________________.

36.   Mycorrhizae are mutualistic associations between a fungus and what? _______________________________________________

37. A lichen is a symbiotic association between a fungus and what type of organism? ____________________________________________.

38.  Hyphae that do not have septa are called _________________________________.

39. The ability to change from Multicellular to Unicellular is called ___________________________________.

40. Cells containing two nuclei are called __________________________.

41. Cells containing one nucleus are called _________________________________.

42. A plant can benefit from a fungus because the fungus _____________________________
_________________________________________________________________________.

43. The species of Mushrooms that is poisonous is ________________________________.

44. The Edible species is known as __________________________________.

47. A Mycelium is an interwoven mat of ____________________________________.

48.  All asexual reproductive spores in fungi are composed of only _______________  ___________________.

49.  Fungi cause disease in humans through _______________________________, _____________________________ and _______________________________.

50. Unlike animals, fungi ____________________ their food before ________________________________ it.

51. Visible, cup-like sexual reproductive structures are called ______________________________________.

52. The association between a fungus and plant roots is called ______________________________________.

53.  Fused gametangia is called __________________________________.

54. A tangled mass of hyphae describes what type of fungus? _______________________________________.

55.  An association between a fungus and a green algae is called _________________________________________.

56. The cells walls of fungi are composed of ___________________________.

57. All fungi reproduce ___________________________ some only reproduce ________________________________.

58.  Fungi imperfect reproduce only _____________________________________.

59.  A unicellular fungi that resembles bacteria is a ____________________________.

60. Fungi evolve from __________________________ through ___________________________________.

61.  Mycorrhizae and lichens are both ________________________  _____________________________ associations.

 

DIRECTIONS: Answer the questions below as completely and as thoroughly as possible. Answer the question in essay form (not outline form), using complete sentences. You may use diagrams to supplement your answers, but a diagram alone without appropriate discussion is inadequate.

1.  Describe Three different kinds of Asexual Reproduction found in fungi.

2.  Explain why lichens are important to the environment.

3.  How does gametangium differ from a Zygosporangia?

4.  Explain how fungi obtain their nutrients?

5. What are mycorrhizae, AND what is their ecological role?

6.  Identify ONE Way in which fungi differ from organisms in Each of the Other KINGDOMS of Eukaryotic Organisms.

7. What Characteristic makes fungi an important resource recycler?

8. Explain why being able to reproduce Both Sexually and Asexually is an adaptive advantage.

9. Explain how fungi cause disease in humans and Which fungi causes athlete’s foot and vaginal yeast infection?

10. Compare an Ascocarp with a Basidiocarp.

11. Describe the reproduction of Ascomycetes.

12. Describe the reproduction of Zygomycetes.

13. Describe the reproduction of Basidomycetes.

14. Explain the benefits  plants and fungi derive from a mycorrhizal relationship.

 

 

 

Planarian Characteristics

Flatworm Characteristics

–Flat bodies (gases move by diffusion)
–bilateral symmetry
–gastrovascular cavity
–some flatworms are parasitic, some are freeliving
–they have anterior and posterior heads and exhibit cephalization

 

Types of Flatworms (planarian, tapeworm, fluke)

Planarian (also known as Dugesia)–lives in freshwater
–mostly a scavenger, also feeds on protists
–hermaphrodites
–has a simple brain (ganglia) and nervous system, plus 2 eyespots
(see handout on planarian)
–they can regenerate (regrow parts)

Anatomy of the Planarian Characteristics

Brain (ganglia) – planarian can process information about their environement
Pharynx – used for suckling food in (the mouth is at the end of the pharynx)
Eyespot – simple eye, can detect light
Flame cells – located along the lateral edges, used for excretion
Intestine – digestion (does not have an anus)

 

Practice Making Line Graphs

 

Practice Making Line Graphs  

Review your notes on line graphs. (Notes)

Problem # 1:

The relative hormone levels vary greatly during the 28-day human menstrual cycle. The table below shows the relative levels of the four major hormones by day.

Day Luteinizing
Hormone (LH)
Follicle Stimulating
Hormone (FSH)
Estrogen Progesterone
1 6 10 10 2
2 7 11 10 2
3 8 12 10 2
4 8 13 10 2
5 8 14 10 2
6 8 13 13 2
7 8 12 16 2
8 8 12 19 2
9 8 12 22 2
10 10 13 28 2
11 12 14 35 2
12 22 16 28 3
13 32 20 22 4
14 20 15 19 5
15 6 10 16 8
16 6 9 15 10
17 6 8 15 12
18 6 8 15 15
19 6 8 15 18
20 6 7 15 24
21 6 6 15 28
22 6 6 15 28
23 6 6 15 28
24 5 6 13 24
25 4 6 10 18
26 3 8 10 12
27 3 10 10 7
28 3 10 10 2
  1. Estrogen levels are highest on day number?
  2. LH levels are highest on day number?
  3. This data is very accurately measured. Plot the data points and then draw a line graph in “connect-the-dot” fashion.

Title _________________________________________

 

 

Problem # 2:

Amount of ethylene in ml/m2 Wine sap Apples:
Days to Maturity
Golden Apples:
Days to Maturity
Gala Apples:
Days to Maturity
10 14 14 15
15 12 12 13
20 11 9 10
25 10 7 9
30 8 7 8
35 8 7 7
  1. Ethylene is a plant hormone that causes fruit to mature. The data above concerns the amount of time it takes for fruit to mature from the time of the first application of ethylene by spraying a field of trees.
  2. Make a line graph of the data.
  3. What is the dependent variable?
  4. What is the independent variable?

 

Title _________________________________________

 

 

Problem # 3:

Age of the tree in years Average thickness of the annual rings in cm.
Forest A
Average thickness of the annual rings in cm.
Forest B
10 2.0 2.2
20 2.2 2.5
30 3.5 3.6
35 3.0 3.8
50 4.5 4.0
60 4.3 4.5
  1. The thickness of the annual rings indicate what type of environmental situation was occurring at the time of its development. A thin ring, usually indicates a rough period of development. Lack of water, forest fires, or a major insect infestation. On the other hand, a thick ring indicates just the opposite.
  2. Make a line graph of the data.
  3. What is the dependent variable?
  4. What is the independent variable?
  5. What was the average thickness of the annual rings of 40 year old trees in Forest A?
  6. Based on this data, what can you conclude about Forest A and Forest B?

Title _________________________________________

 

 

 

Preap Homeostasis Study Guide

 

Homeostasis & Transport Review  

 

1. A type of transport in which water moves across and down its concentration gradient is called ______________________________________.

2. Net movement of water across a cell membrane occurs from a ___________________ solution to a ________________________ solution.

3. A _____________________  ___________________ only allows certain molecules to pass thorough.

4. A __________________________  _____________________ is the concentration difference across space.

5. A structure that can move excess water out of a unicellular organism is a __________________________  ______________________.

6. The movement of some substances, without any input of energy by the cell, is called ________________________   ________________________.

7.  The process of diffusion requires________________________________________________
___________________________________________________________________________.

8. If the molecular concentration of a substance is the same throughout space, the substance is in ____________________________________.

9. All forms of passive transport depend on the ___________________  ________________ of molecules.

10.  The movement of molecules from an area of higher concentration to an area of lower concentration is called ______________________________.

11.  Sodium-potassium pumps move ___________________ ions _______________ of the cell and ___________________________ ions ___________________ the cell.  This causes the inside of the cell to have what type of charge? __________________________.

12.  Most of the time, the environment that plant cells live in is ________________________.

13.  Plasmolysis of a human red blood cell would occur if the cell were in a(n) ____________________________  ____________________________.

14.  The bursting of cells is called _____________________________.

15.  The pressure that water molecules exert against a cell wall is called ___________________  _________________________________.

16.  A membrane bound organelle used in endocytosis is called a _______________________.

17.  A relatively high solute concentration is called _____________________________.

18.  The uptake of large particles is called ________________________________.

19. The shrinking of cells is called _____________________________________.

20.  A relatively low solute concentration is called ___________________________.

21.  The uptake of solutes or fluids is called ________________________________.

22.  Molecules always diffuse ___________________ their concentration gradient.

23.  The diffusion of water across a membrane is called __________________________.

24.  In an ________________________  _____________________ the concentration of solutes outside and inside the cell are equal.

25. Transport that requires the cell to expend energy is called _____________________  ________________________________.

26. Which type of molecule forms a bilayer within a cell membrane? __________________________________

27.  Most food and wastes materials that move into and out of a cell go through ____________________________  ________________________________.

28. Glucose molecules cross the cell membrane by means of ______________________________ _______________________________.

29. Ridding the cell of material by discharging it from sacs (vesicles) at the cell surface is called ____________________________________________________.

30. Molecules that are too large to be moved across a cell membrane can be removed from the cell by ________________________________________________.

31. A substance that dissolves in another substance is called a (n) _________________________________________.

32. The diffusion of ___________________________ through the cell membranes is called osmosis.

33. When water enters the cell, it creates pressure. This pressure is called _____________________________  _______________________________________________.

34. A cell does not expend __________________________ when diffusion takes place.

35. __________________________ is the most common solvent in cells.

36. A cell membrane is said to be _______________________________________ permeable because it allows  the passage of some solutes and not others.

37. Facilitated diffusion and active transport are two types of ________________________________ transport.

38. __________________________ _______________________________ allows a cell to stockpile substances in far greater concentrations that they occur outside the cell.

39. Active transport systems are a form of cell transport that requires energy from molecules of __________________________________________________.

40. The process in which an amoeba engulfs its prey and takes it in is known as _______________________________________________________________.

For each of the following, Identify the transport type:

a) A cell membrane encloses and takes in a droplet of fluid.______________________________
b) Carrier proteins use energy and act as a pump to move nutrients into a root cell. ____________________________________________
c) Carrier proteins take sugar (glucose) into a cell without requiring energy input. ____________________________________________
d) Water diffuses across a cell membrane from a region of high concentration to a region of low concentration. _______________________________________
e) Mucus and waste products packaged by Golgi apparatus are secreted by a cell. ________________________________________
f) A cell membrane encloses and takes in food particles. ________________________________

DIRECTIONS: Read Chapter 5, Homeostasis and Transport, and Answer the questions below as completely and as thoroughly as possible. Answer the question in essay form (not outline form), using complete sentences. You may use diagrams to supplement your answers, but a diagram alone without appropriate discussion is inadequate.

1. Name and Describe Three types of passive transport AND Three types of active transport.

2. How do ions cross the lipid bilayer of the cell membrane?

3. Toward what condition does diffusion eventually lead, in the absence of other influences?

4. Explain the difference between pinocytosis and phagocytosis.

5. What is the fundamental difference between carrier proteins that participate in facilitated diffusion and carrier proteins that function as pumps.

6. Explain the difference between passive transport and active transport.

7. Describe what would happen to the molecules in a drop of ink dropped into a beaker of water.  What is this process called?

8.  What would happen to a freshwater unicellular organism if its contractile vacuole stopped functioning? Explain your answer.

9. How is osmosis related to diffusion?

10.  Contrast endocytosis with exocytosis.

11. Define a hypotonic, hypertonic and isotonic solution.

12. Describe the action of the sodium-potassium pump.

13.  Three red blood cells are placed in hypertonic, hypotonic, and isotonic solutions.  Compare the behavior of the three cells. Explain your answer on the basis of concentration gradients, diffusion, and give the name of the effects.

 

 

 

Planarian Regeneration Activity

Flatworms – Observation of a Live Planarian

click here for background

 

You will receive a small petri dish with a flatworm inside it.  The flatworm is the freshwater planarian, also known as Dugesia.

 

1.  List 3 characteristics of flatworms.

 

 

 

2.  What type of symmetry does this worm have?


3.  Where do planarians live?

 

 

4.  Observe your worm, using a microscope or hand lens. Sketch the planarian below. Label the eyespots. Label the anterior and posterior ends. 

 

 

 

 

 

 

5.  Measure your planarian.  This operation is best performed by removing some of the water from the dish and waiting for the worm to stretch out.   Measure the length of the worm in millimeters.  (Always replace the water; you can use the dish lid to transfer water to and from the planarian environment.)

 

 Length of Planarian  _______mm

 

Write your length on the board and when all the lengths are down, determine the average planarian size.

 

 Average    ____________ mm

 

6.  Observe the planarian for five minutes. Does the planarian seem active or passive?  How does it move?  Does it swim or creep?   Where in the dish does it spend most of its time? Make a current in the water with a pipette.  How does the planarian react?  Fill out the table below.

  Description
Movement   
Worm location  
Reaction to current  

  

7.  Planarians actually display a “handedness” being right or left handed.   You can discover whether your worm is right or left handed by flipping the planarian over on its dorsal (back) and seeing which way it recovers.   If it rolls to the right, it is right handed, if it rolls to the left, it is left-handed.    Do five trials to determine the handedness of your planarian. 

 Fill out the data table:

  Which way does it turn (left or right)
Trial 1  
Trial 2  
Trial 3  
Trial 4  
Trial 5  

 

Based on your data, is your planarian right or left handed?   ____________

 

8.   Design an experiment to test the planarians reaction to light and dark.  You will have flashlights and the room will be darkened for this part of the lab. Describe your experiment.

 

 

   

Conduct your experiment to determine whether the planarian prefers light or dark.   Construct a data table

 

 

     

Write your conclusions.  Make sure you answer the question:  Does the planarian prefer a light or dark environment and include your reasoning.

 

   

 

9.  Drop a piece of food into the petri dish with the planarian.  Observe the planarian’s reactions.  It may take a few minutes.   How does it eat the food?   Where is its mouth?  Use the space below to write your observations.

 

Reaction to food _______________________________________________________

 

How does it feed?

 

 

Where is the mouth located?

 

What is the name of the tube used for feeding in the planarian?

 

Planarian Reproduction –Make sure your planarian has finished eating entirely and its pharynx is withdrawn, if it gets too close to the end of the hour, ask your teacher for a different planarian

 

Planarians are hermaphrodites.  Define hermaphrodite

 

   

Planarians can also reproduce by regeneration. Define regeneration.

 

   

Is this method of reproduction sexual or asexual?

 

Pour out some of the water, so that the planarian is mostly un-submerged.  When it stretches out, use a razor blade to cut it cleanly in half. Replace the water and put the lid on it. Observe the two pieces of the planarian under the microscope.  

Fill out the table below.

 

Movement (observations) Sketch
Anterior end  

 

 

     

Posterior end

 

 

Label the lid with your NAME and HOUR.

 

Make a prediction:  How long do you think (in days) will it take for your planarian to completely regenerate?