YR2-CH18-LSN3

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

LESSON 3

HOW DID THE HW GO:

• SUMMARY OF PREVIOUS LESSON
• QUESTIONS
• WHAT TO DO FOR NEXT WEEK

Surface Area to Volume Ratio

Surface Area to Volume Ratio

Explain how the SA/V ratio is an adaptation to

• hot ecosystems
• cold ecosystems

Assignments on classroom

first 10 minutes in silence

Assignments on classroom:

"Ecology lesson 3"

ANSWERS

Assignment 1 - R:

Write true if the statement is true or false if the statement is false. 

_____ 1. The definition of a physiological adaptation is a body process that helps an organism to survive.

_____ 2. The white fur of a polar bear is an example of structural adaptation.

_____ 3. Huddling by male penguins to conserve heat is an example of structural adaptation.

_____ 4. The ability of a seal to divert more blood to its brain during diving is an example of physiological adaptation.

_____ 5. Ducks have webbed feet that enable them to swim, this is an example of a structural adaptation.

Assignment 1 - R:

Write true if the statement is true or false if the statement is false. 

__TRUE___ 1. The definition of a physiological adaptation is a body process that helps an organism to survive.

__TRUE___ 2. The white fur of a polar bear is an example of structural adaptation.

__FALSE___ 3. Huddling by male penguins to conserve heat is an example of structural adaptation.

__TRUE___ 4. The ability of a seal to divert more blood to its brain during diving is an example of physiological adaptation.

__TRUE___ 5. Ducks have webbed feet that enable them to swim, this is an example of a structural adaptation.

Assignment 2 - T1:

1. A plant adaptation commonly found in dry, hot climates is

a. a thin waxy cuticle

b. small numerous stomata

c. plants with stomata that open during the night

d. ability to lose leaves during the wettest part of the year

 

2. Desert plants have a deeply penetrating root system because

a.The roots need to provide a larger surface area for water uptake

b. The roots need to reach water that may be found at relatively greater depths

c. The roots need to store more starch so the plant can survive in arid conditions

Assignment 2 - T1:

1. A plant adaptation commonly found in dry, hot climates is

a. a thin waxy cuticle

b. small numerous stomata

c. plants with stomata that open during the night

d. ability to lose leaves during the wettest part of the year

 

2. Desert plants have a deeply penetrating root system because

a.The roots need to provide a larger surface area for water uptake

b. The roots need to reach water that may be found at relatively greater depths

c. The roots need to store more starch so the plant can survive in arid conditions

3. Which feature of a rose helps it grow without being eaten by large animals?

a. flowers with bright colours

b. sharp thorns

c. small seeds

d. deep roots

4. A nice smell is an adaptation that __________________.

a. helps the plant keep water inside the leaves.

b. pokes animals that try to eat the plant.

c. attracts pollinators to the plant.

3. Which feature of a rose helps it grow without being eaten by large animals?

a. flowers with bright colours

b. sharp thorns

c. small seeds

d. deep roots

4. A nice smell is an adaptation that __________________.

a. helps the plant keep water inside the leaves.

b. pokes animals that try to eat the plant.

c. attracts pollinators to the plant.

5. What is an adaptation?

a. A feature that helps a plant grow.

b. A feature that helps a living thing survive.

c. A feature that helps a living thing walk.

d. A feature that helps only animals survive. 

6. The American Black Bear in Colorado can hibernate for over 3 months during winter. Black bears in Florida may hibernate for only a few weeks or not at all. Why?

a. the weather is not as cold in Florida

b. it has less territory

c. it eats different food

d. they are smaller than the bears in Colorado

7. Many species of desert animals have adapted to hunting at night, what is this an example of?

a. Structural adaptation

b. Behavioural adaptation

c. Physiological adaptation

5. What is an adaptation?

a. A feature that helps a plant grow.

b. A feature that helps a living thing survive.

c. A feature that helps a living thing walk.

d. A feature that helps only animals survive. 

6. The American Black Bear in Colorado can hibernate for over 3 months during winter. Black bears in Florida may hibernate for only a few weeks or not at all. Why?

a. the weather is not as cold in Florida

b. it has less territory

c. it eats different food

d. they are smaller than the bears in Colorado

7. Many species of desert animals have adapted to hunting at night, what is this an example of?

a. Structural adaptation

b. Behavioural adaptation

c. Physiological adaptation

Assignment 3 - T2:

Assignment 4 - I:

Last year you learned about Cnidarians. Look up an example of one of these animals. Look at what you learned about these animals last year. Give and explain an example of each of the adaptations you have learned about in this lesson, make sure you explain this in detail!! (50 words).

Assignment 4 - I:

STRUCTURAL: Although a somewhat ungainly shape for swimming, jellyfish have developed a few ways in which to propel themselves through the water. Some jellyfish prefer to float, letting the current carry them here and there. Because their bodies are made up of about 90 percent water, floating is very natural. Other jellyfish use muscles in their main body to swim. These muscles, which ring the entire bell shape, move up and down, undulating, to create movement.

Assignment 4 - I:

BEHAVIOURAL: Jellyfish often move around in groups so they are less vulnerable to predators. Although jellyfish have developed many ways to move through the water in which they live, they tend to be slow creatures. This means that when a predator attacks, jellyfish may have a hard time getting away, as they cannot quickly flee.

Assignment 4 - I:

PHYSIOLOGICAL: One of the most interesting things about jellyfish is the groups of stinging tentacles they have. These tentacles can help defend the jellyfish. The size and number of tentacles and stinging cells, as well as the potency of the sting, depends on the type of jellyfish. Stings can be quite painful, or may even paralyse other fish. Some jellyfish, such as the lion’s mane jelly, develop symbiotic relationships with other fish. The fish live near the tentacles, picking up scrap foods, and protect the jellyfish from larger predators.

HW FOR LESSON 4

WORK THROUGH THE PRESENTATION ON LESSONUP CALLED:

YR2-CH18-HW4